How to calculate your real Amazon FBA margin (with example)
The mistake that loses the most money on Amazon FBA is confusing selling price with profit. A $30 product can net you $2… or lose you money. In this guide you'll learn to calculate your real net margin with a concrete example.
Free tools, no sign-up
Check a product's estimated demand — eBay's estimated units sold, observed active-listing prices and competition.
Explore a category by estimated demand — product types ranked by an estimated market gap based on official eBay signals.
The costs you must subtract
- Product cost — what you pay the supplier (usually 25-55% of the selling price depending on category).
- Amazon referral fee — usually ~15% of the selling price.
- FBA fee — handling, packing and shipping to the customer (varies by size/weight, ~$3-6 for small items).
- Shipping to Amazon — from the supplier to Amazon's warehouse.
- Advertising (PPC) — cost per sale to get visibility.
Step-by-step example
A product selling at $29.99:
| Selling price | $29.99 |
| Product cost (≈30%) | −$9.00 |
| Amazon referral fee (15%) | −$4.50 |
| FBA fee | −$4.50 |
| Shipping to Amazon (per unit) | −$1.00 |
| Advertising per sale | −$3.00 |
| Net profit | $7.99 (≈27%) |
A net margin of 27% is healthy. As a rule: below 20% the product is risky; above 30% it's excellent.
📘 Download the free Soldnova Complete Guide
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The trick: calculate the margin BEFORE you fall in love
Many sellers calculate the margin after they've already bought inventory. Do it the other way around: filter by margin first and only then evaluate the rest. A pretty product with a 12% margin is not a business.
How Soldnova helps with margin (and what it does not do)
Let us be clear: Soldnova does not calculate your margin, and you should be suspicious of any tool that claims it does. Your margin depends on your sourcing, your volume, your shipping and your fee tier — two sellers with the same product have different margins. What Soldnova gives you is the half you cannot work out on your own: the real price that product is selling at (median and P25–P75 range from real eBay sales, not the most expensive listing) and how much demand sits behind it. Plug that number into the formula above and your margin comes out right, instead of starting from a price you made up. Try it in the free tool, no account needed.
Filter products by real margin
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