Amazon rejects or penalizes inventory that arrives at its warehouses incorrectly prepped. Wrong labels, missing polybags, or unscannable barcodes can mean stranded inventory, extra fees, and weeks of lost sales. That is why FBA prep exists as a service, and why so many sellers hand it to a fulfillment partner instead of doing it on the living room floor.
Depending on your products, prep can include applying FNSKU labels over existing barcodes, polybagging items with suffocation warnings, bundling multipacks, inspecting units for damage before they ship to Amazon, and building compliant master cartons and pallets. The goal is simple: your inventory checks in at Amazon without a single flag.
Pricing in the industry is usually per unit, and it varies by how much work each unit needs. As a reference point, here is what we charge at ShipByClick: online arbitrage prep runs $1.50 per unit including label and polybag, FBA outbound shipping is $2.00 per master box, and pallet preparation is $19.99 per pallet plus $0.99 per box, wrap and label included. Receiving your inventory into the warehouse costs $0.15 per unit. No monthly software fee applies to any of it.
Shipping to Amazon without inspection. If a supplier sent you damaged goods and they land at Amazon uninspected, you find out through customer returns and negative reviews. Inspection during prep catches problems while they can still be fixed.
Ignoring carton requirements. Overweight boxes and oversized cartons trigger fees or refusals. A prep partner who ships to Amazon daily knows the current rules, because the rules change.
Treating prep speed as an afterthought. Every day your inventory sits unprepped is a day it is not selling. Ask any prep provider how quickly units move from arrival to Amazon ready.
Self prep makes sense at very small volume. The math changes fast as you grow: your hourly value as the owner of the business is almost certainly higher than the per unit cost of professional prep, and professionals make fewer compliance mistakes. Most sellers we meet switch after their first stranded shipment.
The process is simpler than most sellers expect. You route your supplier shipment or removal order to the warehouse, the partner receives and inspects it, preps every unit to Amazon's current requirements, and ships it in. From the day your inventory lands, you can be selling within days, sometimes the same day.