How to Buy and Sell on Facebook Marketplace If you're looking to buy or sell items on Facebook, you can do so by using the Facebook Marketplace. This feature allows you to list items for sale, as well as search for items that you may be interested in buying. In this video, we'll show you how to use the Facebook Marketplace to buy and sell items. We'll start by showing you how to list an item for sale. To do this, you'll need to go to the Marketplace tab on the left side of your Facebook homepage