Unit - Marketplace is an iPhone app designed for students to sell their used academic books to fellow students in the vicinity. The app simplifies the process by allowing users to scan the book's barcode, set a price, and specify the condition of the book. It provides a comparison with the book's price on Amazon and makes the post visible to potential buyers.

Students using Unit - Marketplace can conveniently communicate with interested buyers through the app to discuss payment and delivery methods. This app offers a practical solution for students looking to sell their used books and for others seeking affordable academic resources.