The lowest price you can charge and still not lose money.

Get our occasional Amazon-profit playbook — pricing floors, fee surprises to watch for, and what we automate on our own account.

• ✓Why the referral fee quietly raises your break-even price
• ✓The free FBA profit calculator to check margin at any price
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Your break-even price moves every time Amazon changes a fee. RedHen syncs the real fees Amazon billed you and tracks true net profit per product — so you find out the day a fee hike pushes a product underwater, not at tax time. Flat fee, never a percentage of your sales.

Add your fixed per-unit costs (COGS, FBA fee, inbound shipping, and a returns allowance), then divide by one minus the referral-fee rate. Dividing — not just adding the referral fee — is the step most sellers miss, because the referral fee is a percentage of the final price, not a flat amount.

Because the referral fee is a percentage of the sale price, which you don't know yet. If you set price = costs + 15%, the referral fee on that new, higher price is more than you accounted for. Solving the equation (costs ÷ (1 − referral rate)) gives the true break-even.

Above break-even by enough to cover ad spend and leave profit. Enter a target margin and the tool gives you the exact price that hits it after fees — then make sure there's still room for your PPC budget on top.

No — this is your pre-ad price floor. Ad spend comes out of the margin above break-even. Use the free break-even ACoS calculator to see how much of that margin you can spend on ads.

The math is exact for what you enter, but FBA and referral fees are estimates until you pull the real figures from Seller Central — Amazon sets them per ASIN. RedHen syncs the actual fees Amazon billed you so your break-even uses real numbers.

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