Four structures replace it: a flat monthly retainer, a per product tier, a capped profit share that starts above a threshold, and equity in exchange for discounted work. For most brands below about $50,000 in monthly profit, a flat retainer is the cleanest, because the fee never grows when your costs do.
The short version
- A fee on revenue is charged before your costs are. Goods, referral fees, fulfillment, returns and ad spend all sit below the line it taxes.
- Flat retainer. One number per month, unaffected by volume, promotions or a slow quarter.
- Per product tier. The fee tracks catalog size, which is what actually drives the work.
- Capped profit share. Reasonable only when profit is large and steady. We use it above $50,000 per month in profit, at 10 to 20 percent.
- Equity for discounted services. Case by case, and a governance decision rather than a pricing one.
Why revenue is the wrong line to tax
Revenue is the number furthest from your bank balance. Between a sale and the profit you keep sit cost of goods, Amazon's referral fee, fulfillment, storage, returns and advertising. A percentage of sales is levied on top of that whole stack, before any of it is deducted, so the fee is insulated from the exact costs the agency is being paid to control. Two brands with identical revenue and completely different margins pay the same amount.
It does something subtler too. It makes a discount expensive for you and free for them. Run a promotion to clear aging inventory and your margin drops while the fee rises. Discontinue an unprofitable ASIN and your profit improves while the fee falls. Several decisions that improve your business shrink their invoice, which is not a claim about anyone's integrity, just a description of the arithmetic.
Every alternative below is an attempt to tax a line that moves in the same direction you do.
The four alternatives, side by side
| Model | What the fee tracks | Where it distorts | Best fit |
|---|---|---|---|
| Flat monthly retainer | Nothing. It is fixed | Nowhere on incentives, though a slow month feels expensive | Brands under about $50,000 monthly profit |
| Per product tier | Catalog size | Makes adding SKUs attractive to the agency | Brands adding products deliberately |
| Capped profit share | Profit, after costs | Attribution disputes, and it punishes a rebuild quarter | Established brands above the threshold |
| Equity for discounted work | Enterprise value | Hard to unwind, changes who controls decisions | Founders who want a partner, not a vendor |
Flat monthly retainer
You pay the same number every month whatever happens to sales. Ours runs $800 for one product, $1,150 for two, $1,500 for three, $1,950 for four and $2,400 for five, with six or more scoped on a call. Every tier carries the same 50 plus services, with no commission, no revenue share and no onboarding fee bolted on.
The strength is not that it is cheap. It is that nobody in the room earns more by spending more of your money, and nobody loses income by telling you to delete a product. The honest weakness: in a quiet month you pay exactly what you paid in a strong one.
Per product tier
A variant of the retainer where the fee steps up with catalog size. This is the closest fee to real workload, because a fifth product means a fifth listing, a fifth ad structure, a fifth inventory plan and a fifth review profile. Watch the one distortion. If a provider is paid per SKU, adding SKUs becomes attractive to them, so keep the decision to launch a product firmly on your side of the table.
Capped profit share above a threshold
Instead of taxing revenue, tax the number you actually keep, and only once it is big enough to be stable. We use 10 to 20 percent of profit above $50,000 per month, with no fixed fee sitting underneath it. Two conditions make this workable: a definition of profit written into the agreement before anyone starts, and a threshold high enough that one soft month does not swing the fee wildly.
It still carries a flaw. A brand that needs three months of listing, image and creative repair before revenue moves leaves the provider working for very little, and that pressure pushes toward quick sales rather than foundations.
Equity in exchange for discounted services
We do this case by case, and I would rather you treated it as a corporate decision than a procurement one. It changes governance, it changes time horizons, and it is far harder to exit than a monthly agreement. If a discount on fees is the main attraction, negotiate the fee instead.
The question that separates these models
All four structures assume there is a human with enough hours to do the work, and that is the part a pricing page hides. Ask every candidate how many brands each account manager carries. Ask for a number, not a description of their process. At Flapen that figure sits near 1.4 brands per operator, because 50 operators cover about 70 brands between them. Somebody carrying a dozen accounts is running templates no matter which fee model is printed on the proposal.
How to compare two offers built on different models
- Convert both to an annual figure using your last twelve months of real sales.
- Re-run each on a pessimistic case, twenty percent under plan, and an optimistic one, fifty percent over.
- Add the pass through costs no fee includes: inventory, Amazon's seller fees, freight, trademark filing and ad spend.
- Ask what each model does on the day a product should be discontinued.
- Read the exit terms. Ours is month to month on 30 days' notice, and on exit the client keeps the Seller Central account, the campaigns, the creative and a written handover.
What most agencies will not tell you about percentage pricing
Percentage of sales persists because it is easy to sell, not because it is fair. It sounds like shared risk, and on a growing brand it produces an invoice that climbs every quarter without anyone reopening a negotiation. Most sellers only run that arithmetic in year two, when the number has already compounded.
The second thing worth knowing is that the model is negotiable. Providers quote the structure they prefer, not the only one they will accept. Ask for a flat equivalent of a percentage quote, in writing, next to the percentage version, and compare the two at three different revenue levels. The conversation that follows tells you more about how a firm thinks than any deck will.
Related answers
- Revenue share vs retainer for Amazon management
- Commission only Amazon agency pros and cons
- Fair Amazon agency pricing models
- What to ask about fee structure vs ad spend
- Hiring an Amazon agency: the complete guide
Every tier we charge is published openly, in full, at Flapen.
