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Analyzer+ helps decide whether to buy, ArbitragePro+ shows where to buy cheaper. A third piece is missing: measuring, once a product is sold, what it actually returned — and feeding that back into the first two tools. That's Profit+'s role, currently in development.
Why not just copy an existing tool
Mature Amazon profitability-tracking tools already exist, starting around fifteen dollars a month. Their core isn't a data advantage — it's an integration with Amazon's seller API (SP-API), which anyone can connect. What doesn't copy easily is a supplier catalog of several million references already built, and a French tax calculation already written for Analyzer+ — both will be reused by Profit+ rather than rebuilt.
What's planned, in order
- The honest foundation, without depending on the seller API: manual import of Amazon settlement reports (downloadable from Seller Central), COGS calculation using the standard methods (FIFO, constant cost, by lot, by period), indirect expenses with amortization, and the same French net-result calculation used in Analyzer+.
- The differentiator: for every product sold, show whether ArbitragePro+'s catalog would let you rebuy it cheaper today than at purchase time, and alert when the measured real margin degrades against the margin projected at purchase.
- The full loop: automatically push references whose real margin turns negative into the list shared with Analyzer+ and ArbitragePro+, so they stop being suggested as opportunities.
Where Profit+ stands today
The module is under construction and currently shows demonstration data, not real seller-account figures — that's stated clearly on screen for as long as it remains the case.