In addition, most downloadable books are much cheaper than printed editions. Their library currently holds 96 works by 18 authors from Dante to Voltaire. Although some texts are only available to affiliates of VIVA, if you're looking for literary classics you'll find some treasures here. Most modern works that haven't entered the public domain require payment, whether in print form or downloadable as electronic texts. Numerous sites offer online shopping for electronic texts, usually offering a small collection of free public domain works too.
Some classics are available for free.
1st Books sells paperback or hardback editions as well. For more information, read an article on electronic books, and see the Online Books category.