1. Bookfinder.com
With a search engine that offers 150 million new and used books for sale or rent, Bookfinder.com should be a college student's first stop. On average, textbooks on this site are 54 percent cheaper than the books sold in a campus bookstore.
2. Alibris.com
Alibris.com is known for its huge discounts on college student textbooks. Buyers can save up to 90 percent buying through Alibris. Some textbooks sell for as little as $1.99.
3. Half.com
Ebay's Half.com is a fantastic place to get a huge discount on new and used textbooks. The site has a Textbook Superstore that allows you to search for college student textbooks by title, author, keyword or ISBN number. Half.com even allows you to preorder books for your next semester.
4. BOOKSAMILLION.com
BOOKSAMILLION.com, also known as BAMM, is an all-around great site to find cheap books online. Textbook prices are really low, particularly if you pay the $15.00 annual membership fee that allows you to save an additional 20 percent.
5. DealOz.com
DealOzi.com searches more than 200 online bookstores to help users find the best deals on new and used textbooks. The site also provides free coupons and listings for rare books
6. AddALL.com
AddALL is a book search and price comparison site that allows users to comparison shop more than 40 online bookstores, including Amazon and Barnes & Noble. If you want to save time and money on your textbook shopping, AddALL is the place to go.
7. CampusBooks.com
CampusBooks.com allows users to choose from over eight million new and used textbooks. Average users save 58 percent. The site also has a free comparison service and a textbook buyback feature.
8. Amazon.com
College students shouldn't forget about Amazon when searching for textbooks. There are tons of independent sellers on this site who offer used textbooks at a fair price. The prices you pay on Amazon will beat the prices at the average campus bookstore nine times out of ten.
9. Ebay.com
Don't count out ebay when searching for college student textbooks either. There are a lot of ebay users who don't utilize Half.com. You can usually find good deals on common textbooks. If you're lucky, you may be able to buy multiple books from the same seller and save on shipping.
10. Your University's Library
Most college and university libraries keep copies of required textbooks on hand. If you're on a super-tight budget, you might want to consider checking textbooks out from the library. If the library won't lend the books out, you can make photocopies of the chapters your need.