When you list products on Amazon, all customers browsing the site can find and purchase them (as long as the items can be shipped to the customer's shipping address). Customers can add products to their shopping carts using one of three methods:
The Buy Box winners are selected from the pool of eligible sellers based on, among other things, price, availability, and the customer's shipping address. The featured offer is presented as the first choice for buyers using the Add to Cart button on the product detail page. Sometimes, additional offers will also be featured in the Buy Box.
In addition to the Buy Box winning offers, up to three additional Buy Box eligible offers will display in the More Buying Choices box on the product detail page. Any remaining seller offers (including offers that are not Buy Box eligible) are available at the bottom of the More Buying Choices box. Customers can click the new & used link (or new link) to go to the offer listing page.