In FBA ( Fulfillment By Amazon) sellers pay fees to store their products in Amazon’s fulfillment centers as well as for Amazon’s world-class fulfillment services. When an order is placed for a seller’s FBA product, Amazon receives the information, picks the stock from the shelves, packs it, and ships it.
Amazon also provides customer service for all FBA products. These services are covered by fees which are based on the size and weight of items sold. Amazon also imposes short- and long-term storage fees, so the longer an item stays in FBA inventory.
In MFN ( Merchant Fulfilled Network or sometimes FBM, “fulfillment by merchant”) sellers ship their own products directly from their own homes, businesses, or warehouses after receiving orders through Amazon.com. This means that locating the stock, packing the orders, arranging the shipping, and providing all customer service is the direct responsibility of the seller.