Used Text Book Stores

Academic Book Services, Inc. - Grades K-12 reconditioned used textbooks, reference materials, workbooks and paperback titles.
Academic Book Trade - Buy and sell second hand academic and university books.
Bare Bookz - Buys and sells used textbooks; registration required to enter.
The Book Cellar - Specializing in college-level technical books and Christian homeschooling curriculum.
Book Circus - At bookcircus.com save up to 60% on new and used textbooks, study aids, dictionaries, encyclopedias, thesauruses, reference materials, classic literature, and bestselling novels. K-12 and college textbooks.
Book Swap - College textbooks exchange; student to student sales.
Bookbyte - Sells college and school textbooks.
The Cat's Pajamas - Offers new and used homeschool materials. Searchable by grade or language.
Class Book - Used, and some new college textbooks. Buyback service based at East Greenbush, New York.
College Book Service - Offering used textbooks, manuals, discount college as well as university books.
Follett Educational Services - Used textbooks for grades K-12.
Free Book Express - Textbooks and novels, with a 12 site price comparison feature.
Local Texts - Free listings for college textbooks. Search by schools.
PDX Books - Buy and sell college textbooks as well as compare prices at online bookstores.
Powell's Books - Carries an extensive collection of rare out of print used textbooks, reference materials, and technical titles.
StuBex - Book exchange for US and Canadian college students. Registration required.
Text Book Monkey - A place for students to buy and sell textbooks.
Textbook Exchange Canada - Buy and sell used textbooks in Canada.
Textbooks For Sale - A selection of used college textbooks.