Update Square unit costs from a supplier file

Unit cost is what you paid for one unit. Square keeps it per variation. It feeds cost of goods sold, profit and margin reporting, so a stale cost spoils all three numbers. Suppliers change cost far more often than they change a catalog. This page takes the new price list and matches it against your current Square export. Matching runs on SKU, then GTIN, then name. Every cost that moved is listed with the old and new value side by side. Costs that did not move are left alone and spend nothing against the free row limit. Approve the ones you accept, reject the rest, and download a file that changes only those rows.