Manifest Mode
Load a buyout manifest, scan every pair, then compare expected vs received before you complete the submission.
No manifest loaded.
Shows matched, missing, extra, and spend variance by `sku + size`.
Main sheet columns: quantity, SKU, size. With Get Offers on, available offers are copied as cost after one blank column.
Details sheet columns: `title`, `brand`, `barcode`, `productId`, `variantId`.