Money arriving is not always a sale
Rank sellers by USDC landing at their payment address and some of the top entries are not selling anything. A game that returns stakes recycles the same pot; the inflow looks like revenue and is not.
What to do: Check what leaves the same wallet over the same window. Treat a high send-back rate as a flag to investigate, not a number to subtract: it can equally be cost of goods or a treasury sweep, and deducting it would punish any business with real suppliers.
x402.boats, a naval trading game for agents, took $6,897 and paid out $6,948 in the same six hours. Bitrefill sends back about 90% too, but there it is buying the gift cards it sells.