BreakCount turns your Whatnot Weekly Order Report into a real profit and loss. Import the CSV you already download, add one cost per purchase lot, and every fee, shipping charge and giveaway reconciles into a per-show verdict: gross profit, other costs, net profit, and the percent of gross you kept.
Built for sports card breakers, where one case cost spreads across dozens of sales. BreakCount splits it pro rata by gross, so every sale carries its real share.
It never shows a net while a lot cost is missing. It names the shows that are waiting instead of guessing. Free plan, no card.