Is 25% good? On a $30 product that is $7.50 a unit — until a return wave or a Q4 storage spike walks through the door. The honest answer is a band, not a number, and the band most established US sellers aim for after every 2026 fee is 20–30% net.
The band also shifts with the product's shape. A bulky unit pays a bigger fulfillment line than a light one, so the same 25% margin on a 3 lb box leaves thinner absolute dollars per sale than on a 10 oz one. Always read margin next to the break-even gap, not in isolation.
| Net margin per unit | Verdict | Why |
|---|---|---|
| Under 10% | Danger zone | One bad return run or three slow months in Q4 flips the SKU negative. No room for a price war either. |
| 10–20% | Thin | Workable while the listing is new, but fragile — ads alone can erode it. |
| 20–30% | Healthy | The target band. A typical $30 home product nets 23.2% after referral, fulfillment, fuel, ads, freight, returns, storage and placement. |
| Over 40% | Rare | Happens in premium niches — if you see it on a generic product, check that you actually modeled the hidden cost buckets. |
New listings start thinner — 10–15% while reviews build and bids run high. Treat that as a launch phase, not a destination. The plan should say how the SKU reaches the 20s: a cost renegotiation, a packaging tier drop, or a repricing once organic rank holds.
The calculator shows net margin per unit next to the break-even price, with every 2026 fee line itemized:
Twenty-five percent sits inside the healthy 20–30% band most established US FBA sellers target after all fees, advertising, freight, storage and returns. The real test is the cushion beneath it: price should sit at least 20% above the break-even price, so a return wave or a Q4 storage spike does not turn the unit negative.