Phlybuy
The bastard child of eBay and Craigslist used for buying and selling college books.
Markets
About
Phlybuy bridges the gap between used college books and students who need them. It offers an online marketplace similar to Pinterest for users to find the books they need for class and offer money or a fair trade. They then meet up to make the exchange using the map application and leave reviews for each other that affects their Charisma.