To access Marketplace tap on the shop icon at the bottom of the Facebook app and you can start looking for things you want to buy, or post an item for sale.
When Marketplace opens, it shows you listed items near you with a Browse to Buy feature that filters feeds of items you can buy from groups or communities you belong to. If you don’t see anything you like, you can filter the search by location, category and price. When you find what you like, you tap the image to get additional information from the seller, which includes the name and profile photo as well as general location.
Posting an Item for Sale
If you want to sell something on Marketplace, all you have to do is take a picture of it and add it from your camera roll. Name the item you want to sell, describe it and set the price. You then confirm your location and select a category so it can be easily found, and post.
The Items section of the platform keeps track of current and past transactions so you can view saved items and anything you have posted for sale, as well as messages from buyers.