Grocery stores are retailers in the traditional sense rather than a consignment shop or marketplace like Amazon. I think the person you’re replying to is alluding to “slotting fees” for new products and perhaps the more controversial “pay to stay” fees which are far more secretive and, from my understanding, are more of a grey area. Technically I believe the “fee” is considered a type of advertising expense: https://home.kpmg/content/dam/kpmg/pdf/2015/04/revenue-leafl...