ThriftBooks is the world's largest online independent seller of used books. Founded in 2003, they specialize in selling used and rare/collectible books, along with other media like Blu-ray discs, DVDs, and CDs. They are known for their affordable prices and commitment to making books accessible to readers worldwide, promoting literacy and sustainability. ThriftBooks operates multiple processing centers in the US and also sells on other platforms like Amazon, eBay, and Abe.