Zachary Katzenstein

The post names five conditions for lift-off: a product the algorithm can find, a price shoppers can defend to themselves, a margin that survives fee shock, a supply chain that does not run out, and distribution control competitors cannot hijack.

• It also names five failure patterns: using brand-story language while shoppers search in keywords, losing the buy box to a discounting reseller, pricing for Shopify math while ignoring referral and pick-pack fees, launching with no reviews, and stocking out and losing rank.
• The launch checklist includes locking MAP and Brand Registry before day one, building an entry-level SKU to win side-by-side comparisons, budgeting a 30-day loss-leader phase, auditing packaging to drop a fee tier, and launching with 90 days of inventory.
• It sets three weekly thresholds: click-through rate above 0.5% means the image and price are working, conversion rate above 12% means the offer resonates, and advertising cost as a share of sales below 15% means ads are fuelling growth rather than holding it up.

In the post beginning “80% of brands sink their own marketplace expansion ship before the first pallet leaves the dock,” Katzenstein maps five signals of lift-off against five signs of a stall, then tells readers to audit their last launches, circle repeatable patterns and neutralize failure modes.

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The mechanism they describe is a compounding loop: a better conversion rate lifts ranking, ranking brings organic traffic, organic traffic lowers advertising cost as a share of sales, and lower costs produce more profit without paying for every customer twice.

• But Amazon does not always win.
• In a separate post, Katzenstein says the decision depends on traffic quality: when an audit showed the wrong traffic was reaching a brand’s site, optimizing the website would not solve the conversion problem, so they declined the Shopify-only engagement.

A supplement brand came to Convert Ops wanting an Amazon presence that would not compete with its website—a request Katzenstein says comes up in about half of first conversations.

• After the Amazon presence was built, Amazon scaled faster, converted better and generated more profit than the DTC store had in months.
• The brand shut down Shopify advertising and tripled its Amazon ad budget.
• In another example, a prospect wanted only Shopify conversion optimization; Katzenstein audited the account, found the traffic itself was wrong and turned down the work when the prospect still wanted only the website fixed.

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In the example, the fix was not cutting the budget—it went up.

• The team rebuilt the account structure around how Meta’s algorithm currently works, with fewer campaigns and more conversion signals so the creative does the targeting.
• They replaced lifestyle-heavy creative with product-hero ads, split channels by role so Meta handled acquisition, Google captured high intent and AdRoll handled retargeting, and synced advertising with what was live on the site, including promotions and out-of-stock periods.
• The brand then ran in two modes: push toward a $100 acquisition cost in peak season to bring in more customers, and pull back to $70–$75 in slower periods to protect margin.
• Knowing the numbers, Katzenstein argues, replaces panic with deliberate decisions.

A direct-to-consumer brand spending $40,000 a month on ads had a $200 cost per acquisition and no clear idea which part of the funnel was responsible. The initial goal was to halve it to $100; the work brought it to $75 while the budget increased.

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A higher-quantity variation on an existing listing can change how shoppers perceive the product and raise both conversion rate and average order value without new advertising, a new audience or a new product. The advice: pick three bestsellers, test a higher-quantity variation on each, then watch conversion rate.

A consumer packaged goods brand had a bestseller running as a two-pack.

• Katzenstein’s team added a four-pack variation to the same listing—the same product and inventory, with a higher-quantity option.
• Conversion rate on the listing rose 4.5 percentage points, average order value increased by more than $8, and two-pack sales did not move.
• The post describes the result as $5,500 in new monthly revenue without spending another dollar on ads.

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An agency should not accept an engagement when the audit shows the requested scope will not solve the actual problem; doing so puts its name on a fix it knows will not work. The Convert Ops launch post pairs this with a client-centric model that includes an out-clause, described as letting the agency prove itself and retain partners rather than imprisoning a brand.

A prospect wanted only Shopify conversion-rate optimization because traffic was arriving but not buying, and assumed the website was the problem.

• The audit found the traffic itself was wrong, so site optimization would not change the outcome.
• The prospect saw the full picture but still wanted only the website work, and Katzenstein declined.
• The post contrasts this with a business that takes every brief, does what is asked and collects the check.

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The practical argument is to add up the full co-op stack before negotiating so the hidden cost of doing business is visible.

• The line items named are base accrual (COOP), marketing accruals, freight and damage allowances, Amazon Business Pricing Funds, and any additional strategic asks.
• The post invites brands to compare their combined stack and share wins or insights for other brands in negotiations.

The post is a pulse-check for vendor-side brands: total the co-op stack, assess where the dust is settling across the 2026 AVN landscape, and bring negotiation insights back to the group.

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In favour: reach to more than 300 million active customers, including affluent shoppers; consumer trust in Amazon transactions and fast shipping; and the ability to combat unauthorized resellers and counterfeits by selling directly and managing the platform properly.

• Against: Amazon’s discount-driven reputation; limited control over pricing and customer experience, including a returns policy awkward for luxury items; fees that eat into margins even on expensive products; and an algorithm that promotes lower-cost alternatives and can attract clicks from browsers who rarely buy.
• The post notes that Rolex, Chanel and Hermès stay off Amazon to protect exclusivity, while Gucci and Montblanc run curated official storefronts.
• It frames the decision as exposure versus exclusivity and asks whether discoverability is worth potential dilution when the platform may deliver exposure rather than a sales lift.

The post opens with an $11,798 ottoman on Amazon to show the range of high-end goods now sold there. It then lays out pros, cons, reasons to avoid the platform and the curated-storefront alternative before asking readers what they think.

Katzenstein’s post leaves the luxury-on-Amazon decision open rather than recommending a universal approach. Ask whether reach or exclusivity matters more for the brand.

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It answers the question newcomers actually have — what does an Amazon or marketplace launch require beyond a listing and an ad budget? — with a checklist to audit, not a list of promises.

Zachary Katzenstein argues that a marketplace launch lives or dies at the intersection of five conditions: a product the algorithm can find, a price shoppers can justify, a margin that survives marketplace fees, a supply chain that stays stocked, and a distribution setup competitors cannot hijack.

• The post names five common failure patterns: using brand-story language when shoppers search by keywords; losing the buy box to a discounting reseller; pricing for Shopify costs while ignoring referral fees and pick-and-pack costs; launching without reviews; and stocking out and losing rank.
• The launch checklist: lock distribution controls such as MAP and Brand Registry before day one, build an entry-level SKU to win side-by-side comparisons, budget a 30-day loss-leader phase, audit packaging to drop a fee tier, and launch with 90 days of inventory.
• It also sets three weekly thresholds: a click-through rate above 0.5% means the image and price are working; a conversion rate above 12% means the offer resonates; and advertising cost below 15% of sales means ads are fuelling growth rather than holding it up.

For brands planning a campaign

Test a marketplace launch-plan brief with this checklist: Which of the five conditions would they audit first for your product category, and will they commit to reporting weekly click-through, conversion and ad-cost thresholds during launch?

A direct-to-consumer brand was spending $40,000 a month on advertising with a $200 cost per acquisition and no clear idea which part of the funnel was responsible.

• The stated goal was to halve that cost to $100; the work brought it to $75 while the budget increased.
• Four changes drove the result: rebuilding the account structure around how Meta's algorithm currently works, with fewer campaigns and more conversion signals so the creative does the targeting; replacing lifestyle-heavy creative with product-focused ads, which improved conversion rate and acquisition cost; splitting channels by role, with Meta for acquisition, Google for high-intent capture and AdRoll for retargeting; and syncing advertising to site conditions, including promotions and out-of-stock periods.
• The brand now runs two deliberate modes: pushing toward a $100 acquisition cost during peak season and pulling back to $70–75 in slower periods to protect margin.
• Predictable numbers, the post argues, remove the panic when costs move.

For brands planning a campaign

Useful for clients with volatile acquisition costs. Ask what range they would set as the target, when they would spend more or pull back, and how they connect advertising changes to stock and promotion calendars.

A supplement brand wanted Amazon to sit alongside its website without competing with it, a request Zachary Katzenstein says comes up in about half of first conversations with new brands.

• Sixty days after they built the Amazon presence from scratch, Amazon was scaling faster, converting better and generating more profit than the direct-to-consumer store had in months.
• The brand shut down its Shopify advertising, moved budget to Amazon and tripled the ad spend it gave the agency.
• The post attributes this to a compounding loop: better conversion lifts ranking, ranking brings organic traffic, organic traffic lowers advertising cost as a share of sales, and lower costs mean more profit — so the flywheel builds without paying for every customer twice.

For brands planning a campaign

A strong counterpoint for brands treating Amazon as a defensive checkbox. Ask a prospective partner how they would test for channel overlap in your category and what evidence they would want before recommending a budget shift.

A consumer packaged goods brand had a bestseller running as a two-pack.

• The team added a four-pack variation to the same listing — same product, same inventory, just a higher-quantity option.
• Conversion rate on the listing rose 4.5 percentage points, average order value increased by more than $8, and sales of the two-pack did not change.
• The post argues that buyers read pack size as a value signal at checkout, not just a fulfilment choice.
• Its advice: pick three bestsellers, test a higher-quantity variation on each, and watch conversion rate.

For brands planning a campaign

A low-cost first campaign for a brand with existing listings. Ask what a partner would test on your top three products, what result would justify rolling it out, and how they would avoid the variation hurting the base SKU.

A prospect asked for Shopify conversion-rate optimisation because traffic was arriving but not buying, assuming the website was the problem.

• The audit found the traffic itself was wrong, so site optimisation would not have changed the outcome.
• After seeing the full picture, the prospect still wanted only website work, and Zachary Katzenstein declined the engagement, saying they would not put their name to a fix they knew would not address the actual problem.
• The post contrasts this with a business that takes every website-work request, does what is asked and moves on.

For brands planning a campaign

Useful when choosing a partner on judgment rather than price. Ask how they have handled a disagreement about the diagnosis and whether they would put scope limits in writing when the agreed work would not solve the stated problem.

The post weighs Amazon for high-end brands.

• In its favour: reach of more than 300 million active customers, including affluent shoppers; consumer trust in Amazon transactions and fast shipping; and the ability to fight unauthorised resellers and counterfeits by selling directly on the platform and managing it properly.
• Against: a discount-driven reputation that can undercut exclusivity; limited control over pricing and customer experience, including a returns policy awkward for luxury items; fees that eat into margins even on expensive products; and an algorithm that promotes cheaper alternatives and can generate clicks from browsers who rarely buy.
• Rolex, Chanel and Hermès stay off Amazon to protect exclusivity, while Gucci and Montblanc run curated official storefronts.
• The post frames the choice as exposure versus exclusivity: is discoverability worth potential dilution when the platform may deliver exposure rather than a sales lift?

For brands planning a campaign

A ready-made framework for a premium client's channel decision. Ask a prospective partner which precedent they would point to in your category and how they would protect pricing if a reseller undercuts you.

During annual vendor negotiation season, Zachary Katzenstein describes a partnership with Amazon that is becoming increasingly one-way as the platform pushes for higher base accruals, marketing funds and damage allowances.

• The post lists the costs to total up — base accrual, marketing accruals, freight and damage allowances, Amazon Business pricing funds, and additional strategic asks — and invites brands to compare their combined stack.
• They also offer to share wins and negotiation insights.

For brands planning a campaign

Relevant for brands selling through Amazon's vendor channel rather than as marketplace sellers. Ask what visibility a partner would give you into total accruals before renewal and whether they have negotiated the line items above on your behalf.

One post says 80% of brands sink marketplace expansion before the first pallet leaves the dock.

• The winning pattern combines a product the algorithm can find, a price shoppers can defend, a margin that survives fees, reliable supply and controlled distribution.
• Failure patterns include a brand-story blindfold, Buy-Box mutiny, margin mirage, review inertia and inventory whiplash.
• The checklist covers MAP and Brand Registry before launch, an entry-level SKU, a 30-day loss-leader phase, packaging audits to drop a fee tier and 90 days of inventory.
• The post tracks CTR above 0.5%, CVR above 12% and TACOS below 15%.

Audit past launches, identify repeatable patterns, map common failure modes, then run strategy, operations and marketplace execution in parallel.

For brands planning a campaign

A brand brief can call for an operational marketplace launch plan, not just creative assets. Useful when the client needs distribution control, fee-aware pricing and a weekly metric system.

Examples: Source 1

After Convert Ops built its Amazon presence, Amazon scaled faster, converted better and generated more profit than the DTC store had in months.

• The brand shut down Shopify ads and tripled its Amazon ad budget.
• Katzenstein explains the Amazon flywheel: better conversion drives better rank, rank drives organic traffic, organic traffic lowers TACOS, and lower TACOS improves profit.
• The post argues Amazon reaches customers the Shopify store never will.
• In another post, Katzenstein declined a Shopify-only optimization engagement after finding the traffic was the wrong traffic.

The Amazon-first outcome is presented as one brand's 60-day result; the available post does not include independent performance data.

For brands planning a campaign

This creator can evaluate channel conflict and whether a brand should protect DTC or lean into marketplace demand. Expect a diagnosis of traffic quality and channel role before setting scope.

Examples: Source 1 · Source 2

The initial goal was $100; the team reached $75.

• Budget was not cut.
• The account structure was rebuilt around fewer campaigns and more conversion signals, creative shifted from lifestyle-heavy ads to product-hero ads, and channels were assigned roles: Meta for acquisition, Google for high-intent capture and AdRoll for retargeting.
• Ads were synced to live site promotions and out-of-stock situations.
• The brand now chooses between pushing to $100 CPA in peak season and pulling back to $70-$75 in slower periods.
• Katzenstein frames the result as CPA control rather than a reaction to every CPA movement.

Rebuild campaign structure around conversion signals, shift creative to product-led ads, define channel roles, and align media with inventory and promotions.

For brands planning a campaign

Useful for briefs involving paid social, search, retargeting, creative testing and margin-aware budget modes. A brand can ask for a channel-level CPA plan and a clear rule for when to scale or pull back.

Examples: Source 1

The brand already had a bestseller running as a two-pack.

• Convert Ops tested a four-pack variation on the same listing.
• Conversion rate rose 4.5 percentage points, average order value lifted by more than $8, and two-pack sales did not move.
• Katzenstein treats packaging as a value decision, not just a logistics decision.
• The advice: pick three bestsellers, test a higher-quantity variation on each and watch CVR.
• The post also mentions catalog audits for CPG brands on Amazon.

For brands planning a campaign

A campaign can include catalog architecture and offer testing, not just ad spend. Useful for Amazon CPG brands seeking conversion and average-order-value gains from existing traffic.

Examples: Source 1

The case for includes more than 300 million active customers, shopper trust and convenience, and direct control over unauthorized resellers and counterfeits.

• The case against includes Amazon's discount-marketplace perception, limited control over pricing and returns, high referral, advertising and logistics fees, and Amazon promoting lower-cost alternatives against the brand's own products.
• The post notes that Rolex, Chanel and Hermès refuse to sell on Amazon for exclusivity and image control, while Gucci and Montblanc run curated official storefronts.
• The decision is framed as exposure versus exclusivity, with the possibility that Amazon is for discovery rather than a sales lift.

The post is written as an open question and does not state a universal recommendation for luxury brands.

For brands planning a campaign

For premium and luxury campaigns, this creator can weigh discoverability against brand dilution and propose a curated storefront or a no-marketplace route. The brief should state the brand's tolerance for discount adjacency and control limits.

Examples: Source 1

The post says Amazon pushes for higher base accruals, marketing funds and damage allowances, raising the hidden cost of doing business.

• It lists the co-op stack a brand should total: base accrual (COOP), marketing accruals, freight and damage allowances, Amazon Business Pricing Funds, and additional strategic asks.
• It invites brands to share wins and insights for negotiations.

For brands planning a campaign

Relevant for vendor-side brands that need to model total Amazon costs before planning media or margin. A brief can ask for negotiation support and a full co-op cost view.

Examples: Source 1

They audited the site and found the traffic reaching it was not the right traffic, so website optimization would not solve the conversion problem.

• When the prospect still wanted only website work, Katzenstein declined.
• The post says they are not willing to put their name on the line when they know the problem but are not allowed to fix it.
• It contrasts that approach with an agency that takes every engagement.

For brands planning a campaign

A brand evaluating this creator should expect a root-cause diagnosis and possible pushback on a narrow scope. Fit improves when the client is willing to address traffic quality and channel strategy, not just on-site conversion.

Examples: Source 1

Services include Amazon and marketplace services, paid media and ad buying, retention and CRM strategy, executive growth management, conversion rate optimization, brand positioning and rebranding, DTC and e-commerce management, creative strategy and production, coaching and advisory support, fractional leadership, analytics, and product launch and go-to-market strategy.

• Hiring posts seek a marketplace account manager for Amazon, Walmart, and TikTok Shop, and paid media managers covering Meta, Google, TikTok, CTV, and Applovin.
• The roles are described as remote, with a four-day work week and founding opportunities.

For brands planning a campaign

This shows the range a brand can evaluate, from marketplace and paid media to retention and product launch. Before a campaign, confirm the current team and which service line will own the work.

Examples: Source 1 · Source 2 · Source 3 · Source 4

Posts also present agency case studies and services.

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These posts show work concerning the platform, not an affiliation with Amazon.

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Nader's posts stay inside profit-first advertising and account-level fee analysis. Katzenstein takes a wider view: marketplace launch systems, the division of labour between Amazon and DTC, and a full-service agency covering media, retention and product launches.

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Lopez explains policy and enforcement mechanics for listings already under attack. Katzenstein focuses on how a launch and a channel are designed in the first place, including pricing, fees and media spend.

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Kacinski's lens is brand protection and where stock leaks from across connected channels, including Amazon's newer multichannel seller tools. Katzenstein focuses on growth, conversion and advertising economics.

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Cristian Lopez's posts show how to use Amazon Brand Registry and listing policy reports to remove sellers who mislabel branded products as Generic.

• They frame MAP enforcement and unauthorized-seller management as a capacity question: can an overloaded team monitor pricing, listings, and seller activity, then act on what it finds?
• Choose Lopez over Zachary Katzenstein when the decision is how to defend a listing or price already under attack and the brand needs a documented enforcement path, not a growth plan.

Zachary Katzenstein's posts focus on marketplace control and compliance.

• They don't cover paid-media management, DTC conversion, catalog or packaging tests, or marketplace launch thresholds and channel planning.
• Brands that need Amazon and DTC growth planned together would need a second partner.

Examples: Source 1 · Source 2

Bernard Nader's posts use account data: one SKU with $29,519 in sales, $22,650 in Amazon fees, and a $4,078 loss, broken down into FBA fulfillment, referral, storage, and inbound defect fees; and a turnaround where CPC, CTR, ACoS, and TACoS improved while sales did not move, leading Nader to tell the client that PPC was not the bottleneck. Choose Nader over Katzenstein when the immediate task is to diagnose unit economics, fee leakage, and child-SKU profitability before deciding how aggressively to advertise—and the brand wants an advisor willing to say paid media can't fix the problem.

Nader's reviewed work focuses on Amazon advertising and product economics.

• They don't present an omni-channel plan, a DTC-to-Amazon channel strategy, or the launch system and campaign-fit services Katzenstein documents.
• Brands seeking end-to-end marketplace expansion would need to add that scope.

Examples: Source 1 · Source 2

Laurie Kacinski's posts describe brand protection as one connected picture: unauthorized sellers, pricing violations that retailers match, buy-box loss that redirects demand to unapproved sellers, inventory diversion traced through lot codes, and listing changes that can happen without the brand's team knowing.

• Kacinski also flags Amazon's multichannel selling tools, which let a seller list on eBay, Shopify, TikTok Shop, and Walmart from Seller Central—and let a low price or diverted inventory move across channels in hours.
• Choose Kacinski over Katzenstein when the brand's priority is cross-marketplace visibility and enforcement, and multichannel expansion is raising, not lowering, the control problem.

Zachary Katzenstein's posts focus on protection, monitoring, and enforcement.

• They don't cover paid-media acquisition, cost-per-acquisition management, or growth-focused catalog and launch tests.
• Brands whose main need is to scale demand would need a different partner for that work.

Examples: Source 1 · Source 2