Per-unit fee math stops three layers too early. The money leaks in ads, returns, storage, and promos. Paste your SKU numbers and get the full seven-layer waterfall per SKU, the catalog ranking, and the one layer bleeding you dry.
Seven-layer waterfall · per-SKU net profit · catalog ranking · the named leak
A product can sell all day and still lose money. Per-unit calculators stop after fees and cost of goods, which is layer three of seven. The real leaks sit lower down: the ad spend attributed to the SKU, the refunds and lost units, the long-term storage on a slow mover, the coupon that became a permanent crutch. Add those up and a SKU that looked fine on the fee math turns into a treadmill.
Catalog-total thinking hides it further. A healthy total across the account can carry one SKU that quietly bleeds every month while looking busy on the units report. The only way to see it is to run the waterfall per SKU and compare each cost layer as a percent of that SKU's own revenue. The layer that sits far above the rest of the catalog is the leak, and it points straight at the fix.
Units, revenue, fees, landed cost, ads, returns, storage, promos. Whatever you have; missing layers get flagged, not guessed.
True net profit and margin computed per SKU, then the catalog ranked into carriers, break-even, and loss-makers.
For each SKU the abnormal cost layer, its dollar size, and a scale, fix, or cut call you can act on today.
Your figures are sent to our server, processed once by the AI to generate the analysis, and not shared with anyone. We keep your email and a short usage summary so we can send you the results. Your numbers are not resold, published, or used to train anything.
The analysis works only from the figures you paste. It cannot see your full account, so if you leave out ad spend, returns, or overhead, those layers get flagged as missing rather than guessed. Treat the output as a structured diagnosis of the numbers you gave, and reconcile the final figure against your own Payments reports before acting.
Per SKU where you can: units sold, revenue, Amazon fees, landed cost, ad spend, returns, storage, and any promotion costs. The placeholder shows the format. More layers filled in means a truer net profit, but the tool works with whatever you have and tells you what is missing.
Units are not profit. A SKU that moves heavy volume only because ad spend keeps it moving can run a two percent net margin or worse. The waterfall shows each cost layer as a percent of that SKU's revenue, so an ad or returns layer far above your catalog norm is the leak that turns a busy SKU into a quiet loss.
Fixing a cost layer protects the margin you have. The bigger pile usually sits on the product page: visitors who clicked, looked, and left without buying. Our free Profit Audit puts a dollar figure on that leak per thousand visitors and hands you the fixes.
Run My Free Profit Audit → Takes about 2 minutes. You get the exact fixes, not a sales pitch.