---
title: "How to set ROI targets in Amazon vendor vs seller"
canonical_url: "https://flapen.com/blog/how-to-set-roi-targets-in-amazon-vendor-vs-seller"
last_updated: "2026-09-04T16:34:52Z"
locale: en
meta:
  description: "Anchor ROI on contribution margin per unit in both models. Sellers tune price and spend, vendors fix margin at the purchase order, so landed cost decides."
  "og:description": "Anchor ROI on contribution margin per unit in both models. Sellers tune price and spend, vendors fix margin at the purchase order, so landed cost decides."
  "og:title": "How to set ROI targets in Amazon vendor vs seller"
---

``

# **How to set ROI targets in Amazon vendor vs seller**

Anchor ROI on contribution margin per unit in both models. Sellers tune price and spend, vendors fix margin at the purchase order, so landed cost decides.

September 4, 2026·5 min read

FeesPPCSourcingPrivate Label

![Joel Turcotte Gaucher](https://flapen.com/_vercel/image?url=%2Fimages%2Fteam%2Fjoel-turcotte-gaucher-avatar.webp&w=64&q=100)

**Joel Turcotte Gaucher**

Founder

![Flapen cover for How to set ROI targets in Amazon vendor vs seller: the Flapen photographer staging a product beside a blank price-tag prop](https://flapen.com/_vercel/image?url=%2Fimages%2Fblog%2Fclusters%2Fpricing-and-economics-06.jpg&w=1536&q=100) Set them on contribution margin, not revenue, in both models. As a seller you control price, so the target is profit per unit after Amazon's fees and ad cost. As a vendor your margin is fixed at the purchase order, so the only lever left is landed cost and the ad budget you fund on top. ## The short version - **Contribution margin per unit is the anchor.** Every other target is derived from it. - **Seller economics are elastic.** Price, promotion, and spend all move, so targets can be tuned continuously. - **Vendor economics are set upstream.** Once the cost price is agreed, your ROI is mostly a sourcing outcome. - **Landed cost is the biggest untouched lever in both.** Most brands negotiate advertising and ignore the factory. - **Write a floor, not just a goal.** The number below which you stop spending matters more than the number you hope for. ## Start with the unit, then work outward You know the revenue figure you want. It is the wrong place to start, because two brands with identical revenue can have opposite outcomes. Build the unit first. Landed cost, Amazon's fees, returns provision, and then the advertising cost you can carry while still clearing your required margin. That last number is the target, and everything else in a campaign plan is downstream of it. | Line | Seller | Vendor |
| --- | --- | --- | | Who sets the sale price | You | Amazon | | Who holds inventory risk | You | Amazon, after the purchase order | | Where margin is decided | Continuously, by price and cost | Once, at the negotiated cost price | | Main ROI lever | Acquisition cost and price | Landed cost and terms | | Advertising funded by | Your ad account | Your own budget, on top of the wholesale margin | | Speed of correction | Days | Contract cycle | ## Setting the seller target 1. **Calculate contribution margin per unit** at your current price, after landed cost, Amazon fees, and a returns provision based on your actual return rate. 2. **Decide the share of that margin you will spend on acquisition** at this stage of the product's life. Higher early, lower later. 3. **Convert it into an advertising target** and hold campaigns to it, with launch and maturity treated as different numbers. 4. **Set the floor.** The margin level at which spend pauses and the product goes back for a fix rather than more budget. 5. **Review on a fixed cadence.** Weekly in writing, live every two weeks, so drift is caught inside days. ## Setting the vendor target The structure is different because the margin conversation happened before the campaign existed. Your realized ROI is largely decided by the cost price, the terms, and any allowances agreed in the annual negotiation. Advertising you fund on top sits against a margin you cannot widen by raising the retail price yourself. That has one practical consequence: in a vendor relationship, the highest leverage work is usually upstream. A one point improvement in landed cost flows to every unit forever, while a one point improvement in advertising efficiency only affects the units advertising touched. ## Where the real ROI usually hides Both models are constrained by the same input, and it is the one most brands never revisit. Landed cost is negotiated once, at the beginning, usually by someone with no leverage and no comparison quotes, and then treated as a fact of nature for years. We run an in-house sourcing studio in Guangzhou, and the frameworks it uses were built across **500 plus brands**. The pattern is consistent: cost, tooling, packaging, and quality control are re-openable far more often than sellers assume, particularly once volume has grown since the original agreement. A supplier conversation reopened after eighteen months of proven order history is a different conversation from the first one. For a vendor brand, that is close to the whole game. For a seller, it compounds with everything else, because a wider unit margin raises the acquisition cost you can profitably carry, which raises the traffic you can buy, which raises rank. ## What most agencies will not tell you Return on ad spend is the most quoted number in this industry and the least connected to your bank balance. It ignores landed cost, ignores returns, ignores the organic sales advertising assisted, and is reported at whatever attribution window flatters the month. Ask for contribution margin by product instead, and accept that fewer providers can produce it. The second thing: advertising is where agencies can act fastest, so advertising is where the targets get set. Sourcing, packaging, and quality control move slower and are harder to invoice, which is exactly why they are under-worked. If your ROI target requires a two point margin improvement, the factory is often a shorter path than the campaign. ## Related answers - [How to estimate an Amazon brand management budget](https://flapen.com/blog/how-to-estimate-amazon-brand-management-budget) - [ROI calculator for Amazon PPC and listing optimization](https://flapen.com/blog/roi-calculator-for-amazon-ppc-and-listing-optimization) - [Amazon agency ROI benchmarks 2026](https://flapen.com/blog/amazon-agency-roi-benchmarks-2026) - [Amazon agency vs in-house team pros and cons](https://flapen.com/blog/amazon-agency-vs-in-house-team-pros-and-cons) - [Amazon agency pricing and economics: the complete guide](https://flapen.com/blog/pricing-and-economics) How sourcing, creative, and advertising work together on one fee is explained at [Flapen](https://flapen.com/amazon-consulting). ## Keep learning - [Compare Amazon business models](https://flapen.com/guides/business-models) - [Value your Amazon business](https://flapen.com/tools/business-value-calculator) ## **Frequently Asked Questions**Should ROI targets differ by product stage?What is a reasonable target for a new seller product?Can a vendor brand improve ROI without renegotiating cost price?How do returns affect the target?Who should own the target, my team or the agency? ## About the Author![Joel Turcotte Gaucher](https://flapen.com/_vercel/image?url=%2Fimages%2Fteam%2Fjoel-turcotte-gaucher-avatar.webp&w=64&q=100) [**Joel Turcotte Gaucher**](https://flapen.com/blog/author/joel-turcotte-gaucher) Founder & CEO at Flapen Joel has spent 10 years in Amazon and ecommerce, running data and technology at BRANDED and Moonshot Brands, two of the largest Amazon aggregators, where he audited and scaled 60+ acquired brands. He co-founded Flapen to give sellers the data-driven tools and insights they need to compete. His expertise spans product research, listing optimization, PPC advertising, and international expansion. [LinkedIn](https://www.linkedin.com/in/joel-turcotte/) [X](https://x.com/JoelTGaucher) [YouTube](https://www.youtube.com/@JoelTGaucher) [Facebook](https://www.facebook.com/JoelTGaucher) [Instagram](https://www.instagram.com/joeltgaucher) [Reddit](https://www.reddit.com/user/JoelTGaucher/) [More in Working with Agencies ](https://flapen.com/blog/category/working-with-agencies) [**Amazon brand management tiers: the complete guide**Sep 4, 2026](https://flapen.com/blog/brand-tiers) [**Done-for-you Amazon management: the complete guide**Sep 4, 2026](https://flapen.com/blog/done-for-you-management) [**Build vs buy for your Amazon channel: the complete guide**Sep 4, 2026](https://flapen.com/blog/build-vs-buy) [Latest ](https://flapen.com/blog) [**Amazon brand management tiers: the complete guide**Sep 4, 2026](https://flapen.com/blog/brand-tiers) [**Amazon marketplaces by geography: the complete guide**Sep 4, 2026](https://flapen.com/blog/geography-and-marketplaces) [**Amazon account measurement and audits: the complete guide**Sep 4, 2026](https://flapen.com/blog/measurement-and-audit)![The Flapen Weekly Product Research report, an Amazon niche shortlist scored 0–100 with its score radar on the cover](https://flapen.com/_vercel/image?url=%2Fimages%2Fhomepage%2Famazon-product-research-report-dark.webp&w=640&q=100) The weekly niche report ## Product research, in your inbox Every niche that cleared the bar this week: what it sells for, what it costs to enter, and why it passed. When we get one wrong, we publish the correction.**First name****Last name****Email****Get product research**