Several textbook stores are currently online from whom students may purchase their textbooks.  Prices, shipping, and time to delivery differ however.  Be sure to check out the Best Book Buys and Viva Smart sites listed below that offers a comparison of a large number of booksellers including their prices, shipping charges, etc. and links to their sites as well.
A price comparison site consisting of 28 (and growing) independent and chain online bookstores (including textbook sites).  Like Viva Smart below, an invaluable site!
Chegg.com - textbook rental site
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