CampusBookRentals.com have many amazing perks such as free shipping both ways, flexible renting periods, 21 day risk free returns, and you can even highlight in the books. One of the best perks is saving 40-90% off of bookstore prices!
One of their newest programs is called RentBack which allows you to rent the textbooks you own to other students. You are able to make 2-4x the money than you would if using a buyback option. All you have to do is ship your books to CampusBookRentals and they make them available for other students to rent. Everytime your book gets rented you earn money and as the semesters continue your book keeps getting rented. I wish that they had this available when I was in college.
Operation Smile is an all voluntary international medical charity who helps children and young adults get their smiles back due to having a cleft lip. What makes this more amazing is that they do it all for free! They work in over 60countries, have done over 3.5 million comprehensive patient evaluations, and over 200,000 surgeries. These people are literally saving lives. CampusBookRentals donates to Operation Smile every time you rent a textbook.