Fees stack per product
Referral, FBA fulfillment, storage, inbound placement and returns processing. Each one is small. On the wrong SKU, together they are the whole margin.
For FBA sellers with 10–200 SKUs
Find the SKUs that are losing you money.
Send us last month’s settlement report and what each product costs you. Within 48 hours you get net profit for every SKU — after every Amazon fee, checked against the payout Amazon actually sent you. Free.
Get my free profit check
No Seller Central login. No card.
| SKU | Sales | Amazon fees | COGS | Net | Margin |
|---|---|---|---|---|---|
| Bamboo cutting board set | $6,290 | $2,140 | $1,470 | $2,680 | 42.6% |
| Silicone lid pack (6) | $3,120 | $1,310 | $940 | $870 | 27.9% |
| Oversized dish drying rackOversize fulfillment + storage | $4,480 | $2,990 | $1,720 | −$230 | −5.1% |
| Spice jar labels (120) | $1,150 | $520 | $210 | $420 | 36.5% |
| Magnetic knife blockAged-inventory storage on a slow mover | $890 | $710 | $360 | −$180 | −20.2% |
| Total | $15,930 | $7,670 | $4,700 | $3,560 | 22.3% |
$15,930 in sales looks healthy. 2 of these 5 SKUs lost $410 — and nothing in Seller Central put them side by side.
Why the number is so hard to see
The money is spread across reports
Settlements, returns, storage, your own product costs. Nobody joins them per SKU every month — so a product can lose money for a quarter before anyone notices.
Big tools are built for big sellers
All-in-one suites bundle keyword research, PPC and product hunting, priced for large catalogs. If you just need the profit number, you pay for everything else.
How the free profit check works
Tell us you want one
Leave your email below. We reply from alex@redsku.com within one business day with the exact steps.
Send two files
Your settlement reports for the last month — Seller Central → Reports → Payments → All Statements → Download Flat File V2 — and a simple list of each SKU with its unit cost.
Get your table in 48 hours
Every SKU with net sales, Amazon fees, refunds, your cost, profit and margin. The ones losing money are in red, worst first.
What you get
- Profit and margin for every SKU after sales, promotions, refunds, referral and FBA fees, and your product cost
- Checked against the payout Amazon deposited — to the cent. If it doesn’t reconcile, we tell you instead of sending it
- Storage, advertising and subscription charges listed separately, so nothing is hidden in an average
What we never ask for
- Your Seller Central login or API access
- Payment details — the check is free
Your files are used only to build your report and deleted within 7 days after we send it. Never shared, never used for anything else.
Get your free profit check
We’re building RedSKU to do this automatically every month. Right now we do it by hand for a small number of sellers — it tells us what to build, and it tells you which products to fix.
Not ready to send files? Choose “keep me posted” and we’ll only write when the product opens.