ASIN
Amazon's own ID for every product in its catalog.
BSR (Best Sellers Rank)
Amazon's demand signal: how recently and often a product sells in its category.
Buy Box
The Add to Cart box - the seller who holds it gets the sale.
FBA
Fulfilment by Amazon: you send stock in, Amazon stores, ships and handles support.
FBA fulfilment fee
The per-unit charge for Amazon picking, packing and shipping your order.
FBM
You store and ship orders yourself instead of using Amazon's warehouses.
Gated category
Categories and brands you need Amazon's approval to sell in.
Hazmat
Products classed as hazardous materials, with extra FBA rules and delays.
IP complaint
A brand's intellectual-property claim against your listing - serious, avoidable.
Meltable
Heat-sensitive products FBA only accepts part of the year.
MOQ
The smallest order a wholesale supplier will accept.
Multipack
An Amazon listing that sells several units as one - mind the arithmetic.
Online arbitrage
Buying discounted products from retail websites to resell on Amazon.
Prep centre
A service that receives, labels and forwards your inventory to Amazon.
Referral fee
Amazon's commission on every sale, charged as a percentage of the price.
Replenishable
A product you can restock and resell repeatedly, not a one-off clearance find.
Retail arbitrage
The in-store version: sourcing clearance products from physical shops.
Reverse sourcing
Working backwards: start from a proven Amazon product, find who sells it cheaper.
ROI
Profit as a percentage of what you spent - the arbitrage decision number.
Sales velocity
How many units a listing actually sells per week or month.
Seller Central
The dashboard where Amazon sellers run their account, listings and shipments.
Storage fee
Monthly charges for the warehouse space your FBA stock occupies.
Storefront
A seller's public page listing everything they offer - and a sourcing goldmine.
Ungating
Getting Amazon's approval to sell in a restricted category or brand.
UPC / EAN
The retail barcodes used to match store products to Amazon listings.
Wholesale
Buying in bulk from brands and distributors at trade prices to resell on Amazon.