What is the Buy Box?
If the multiple sellers sell the same product, then Walmart.com itemizes the same product that belongs to the different sellers altogether on a single product Page. The page displays the competing prices offered by all the sellers, so that the customers can choose the best suitable seller.
Winning the Buy Box is important because the customers are usually attracted to the first option. Making sure that the items are available in the stock and offering competitive pricing improves the chances of winning the Buy Box, and thus increasing the sale of the product.
Buy Box Winner