Alibris is the only used book website where I order books. Since I rarely buy new books, that means a lot of books for a given year. I have a library of about 2,000 books and have only been disappointed once in the past many years. I began ordering from Alibris after half.com discontinued service. The communication from sellers is very satisfactory and the way Alibris keeps me informed when books are shipped is pleasing. I'm a satisfied customer who looks forward to continued satisfaction.