amazon shipping costs for sellers

amazon shipping costs for sellers depend on the shipping method, size, weight of products, and whether a seller uses Fulfillment by Amazon (FBA) or handles shipping themselves (Fulfillment by Merchant, FBM). For FBA, shipping costs include storing inventory at Amazon fulfillment centers and the shipping fees for delivering products to customers. For FBM, sellers pay for shipping directly to customers. Managing these costs effectively is crucial for maintaining profit margins.