Alibris

Founded in 1998, "Today, Alibris is a vibrant, independent marketplace operating in the worldwide media business: online sales, eBooks, and used/out-of-print books, music, and movies." It's a premiere online marketplace where you can buy and sell new and used books and find over 200 million titles at low prices, from rare and out-of-print books to the latest bestsellers. Shopping at Alibris means that you are directly supporting local and independent sellers. Whether you are looking for fiction, non-fiction, textbooks, children's books, cookbooks, mysteries, romance, or anything else, you will most likely find it at Alibris.