# Zachary Katzenstein

Zachary Katzenstein is a co-founder of Convert Ops, an omni-channel marketing agency. Katzenstein's work focuses on helping brands grow through Amazon and other marketplaces, paid media, and e-commerce strategy.

- Profile: https://b2binfluencer.marketing/creators/zachary-katzenstein/
- LinkedIn: https://www.linkedin.com/in/zachary-katzenstein
- LinkedIn followers: 4,329
- Topics: ecommerce, paid-ads
- Based on 18 dated posts, latest 2026-10-08

## Summary

They are most useful for practical Amazon, marketplace, paid media, and e-commerce growth diagnosis.

- Best for: Mid-market supplement or consumer packaged goods brands already selling on Amazon and their own site.
- Not for: Wellness brands seeking personal sponsored posts or fixed-scope site conversion fixes.
- Check first: Confirm whether they work through Convert Ops service engagements, not personal sponsorships.

### Takeaways

- Reduced a brand's customer acquisition cost from $200 to $75 while increasing ad budget.
- Higher-quantity variation on three bestsellers lifted conversion 4.5 points and average order value over $8.
- Declined a Shopify optimization project because traffic, not the site, was the problem.

## Main ideas

- **A marketplace launch is an operating system, not a listing**: Katzenstein argues that marketplace expansion is mostly decided before the first pallet ships. 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.
- **Amazon and DTC reach different customers, so the channel question is about role**: Katzenstein argues that Amazon does not simply compete with a brand’s Shopify store; it reaches customers the store never will. 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.
- **CPA control means choosing a mode, not reacting to every cost fluctuation**: Katzenstein treats customer acquisition cost as a dial brands set deliberately. 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.
- **Pack size is a value decision the buyer makes at checkout**: Katzenstein argues that packaging is treated as a logistics decision when it is really a value decision. 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.
- **Client selectivity is part of the offer: do not take work you cannot stand behind**: Katzenstein makes root-cause honesty a stated priority, not a slogan. 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.
- **Amazon vendor costs should be totalled, not absorbed line by line**: Writing at annual vendor negotiation season, Katzenstein describes partnership with Amazon as increasingly one-way as the platform pushes for higher base accruals, marketing funds, and damage allowances. 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.
- **Luxury on Amazon is an exposure-versus-exclusivity tradeoff, not a default answer**: Katzenstein presents Amazon for luxury brands as a genuine tradeoff. 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.

## Work to read

- [The five things that make a marketplace launch work — and the five that kill it](https://www.linkedin.com/posts/zachary-katzenstein_80-of-brands-sink-their-own-marketplace-activity-7427832525978415104-jQqM)
- [Cutting a $200 customer acquisition cost to $75 without cutting the budget](https://www.linkedin.com/posts/zachary-katzenstein_i-once-worked-with-a-dtc-brand-spending-40k-activity-7449441366566354945-PURZ)
- [When a brand shut its Shopify store and went all-in on Amazon](https://www.linkedin.com/posts/zachary-katzenstein_60-days-into-working-with-convert-ops-a-activity-7454892235000655872-lBBQ)
- [A packaging change that added $5,500 in revenue with no extra ad spend](https://www.linkedin.com/posts/zachary-katzenstein_we-added-5500-in-new-revenue-to-a-cpg-brand-activity-7468693187914768385-xckw)
- [Turning down a client whose problem was not the one they wanted fixed](https://www.linkedin.com/posts/zachary-katzenstein_i-recently-turned-down-a-prospect-who-wanted-activity-7485015673937518592-643C)
- [Should luxury brands sell on Amazon?](https://www.linkedin.com/posts/zachary-katzenstein_luxurybranding-amazonstrategy-ecommerce-activity-7299801993022263297-Cf-7)
- [What Amazon vendor negotiations actually cost in 2026](https://www.linkedin.com/posts/zachary-katzenstein_amazonvendor-avn2026-ecommercestrategy-activity-7440104876484886528-g9KP)

## Brand relationships

- **Convert Ops** (owned_business)
- **Amazon** (mention)

## Partnerships

Zachary Katzenstein's partnership offer runs through Convert Ops, the omni-channel marketing agency they co-founded, rather than through a personal sponsorship or media-kit model. Brands engage the agency on a service basis across marketplaces, paid media, retention, and fractional leadership. Two working principles affect a buyer's plan: the agency audits before it commits and has declined work where the client's requested fix did not match the diagnosed problem; it also advertises a client out-clause, so engagements are meant to be renewed on results rather than locked in by a long contract. Delivery comes from an in-house remote team rather than one person, with senior marketplace and paid-media roles posted in April 2026. Ask the account or agency directly about rates, minimum spend, and how to begin; no published rate card, minimum spend, or formal partner application appears in the material reviewed.

## Alternatives

- Cristian Lopez: When the brand's first problem is control, not growth: a branded listing relabeled as Generic, unauthorized sellers undercutting prices, MAP violations, or an e-commerce team too stretched to monitor listings and sellers consistently. 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.
- Bernard Nader: When the numbers show the product is losing money and advertising is the suspected cause. 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.
- Laurie Kacinski: When a brand sells across several marketplaces and a problem in one channel could spread. 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.

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AI-assisted summary of public posts. Audience demographics are not available. Engagement appears only where we checked recent posts. Method: https://b2binfluencer.marketing/methodology/