If you label your own inventory with 2D Transit, the savings add up fast. Labeling with 2D Transit avoids a 15- to 30-cents-per-unit Amazon manual processing fee and an optional 30-cents-per-unit charge to have Amazon label your products with an FNSKU. If you ship your cartons with 2D box contents barcodes, Amazon waives the fees. That means that 2D Transit pays for itself through fee savings if you ship at least 550 units per month. And that's not counting the savings in check-in time, error rate, and labor cost!