TextbookBias.com is an ad driven web site. Commissions on sales fund this site and independent research in mathematics and logic. This page includes stores I highly recommend. The Teaching Company provides DVDs from masters of a variety of subjects. Campus Book Rental rents textbooks, CourseSmart offers eBook versions of textbooks, and Easton Press provides collectors editions of the world's greatest books. You can find more merchants on aFountainOfBargains.com
The Teaching Company
The Teaching Company produces high quality lectures from leading professors on the full gamut of academic subjects ranging from philosophy and history to science. The company offers courses in the form of DVDs, CDs and audio downloads. These classes are on par with any course that I took in College. Best of all, you can watch the courses multiple times.
The audio lectures are ideal for people with long commutes, or for entertainment on cross country drives. I like the DVDs as they show the professor and any addition visual materials used by the professor.
Campus Book Rentals
CampusBookRentals.com offers an innovative way for cash-strapped students to reduce their textbook costs. This company rents textbooks. Students pay a rental fee for a book. The company ships the book to the student. At the end of the semester, they return it. Students prefer this service to buying and reselling books because they don't have to pay the full cost of the book upfront. In my college experience, I found that reselling college textbooks was always a hit and miss operation as publishers routinely change editions, making previous editions virtually worthless.
The rental price includes both the postage and return postage for the book. The site is essentially a large privately library with current textbooks that lets you check out a book for the duration of your class. (more)
CourseSmart
CourseSmart is the creation of textbook publishers. The company provides digital copies of popular textbooks in digital format that you can read on your laptop, kindle, iPod or other e-book reader. The price of an ebook is substantially less than a printed volume. Electronic media also takes up less room in the dorm are less of a hassle to move.
Amazon.com
Amazon.com is the largest online bookstore. In addition to a large selection of new textbooks (many at discounted prices), you can buy and sell used books through Amazon Marketplace.
Easton Press
I happen to love books. The last advertiser in my list is a company that brings the appreciation of books to its highest level.
Easton Press is a company that reprints the great books in beautiful leather bound editions.