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Colloquium Bookstores online is your source for official Texas State UniversitySan Marcos textbooks, gear and supplies. Buy or sell used and new textbooks, find official Texas State UniversitySan Marcos gear, and purchase software and gifts - all online. Learn more about our store, including hours and locations, and our promise of high quality and excellent service here.Featured Item
Reserve Your Textbooks
Reserve your textbooks here and save! Request used books to save even more.
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- Our loyalty card customers earned $139,075 in reward credits last year. Don't have one? Sign up today!
- Last year we paid our customers $1.7 million dollars for their used books.
- We are open 7 days a week to serve our customers & parking is easy & free.





