The Buy Box is displayed in the top right corner of a product’s page. With a click, the respective product is added to the shopping cart. If a product (often a specific brand) is sold only by one seller, it automatically receives the shopping cart. If the same product is sold by several sellers, they compete for the buy box. The Buy Box is assigned to a top seller who has to meet a number of known and unknown criteria. The majority of buyers (approx. 90%) use the Buy Box to shop and do not further check the offers of other sellers in the listing. The majority of the sales go to the seller who has the Buy Box.