ThriftBooks is the world's largest independent online seller of used books, founded in 2003, offering a massive selection of used and new books, along with DVDs, CDs, and video games, at affordable prices. They use proprietary software and automation to process, grade, and distribute millions of items from their multiple U.S. processing centers, selling primarily through their website ThriftBooks.com. Key features include a ReadingRewards loyalty program, free U.S. shipping on orders over $15, a barcode scanner in their app, and a commitment to recyclability.