Alibris

Alibris is the place to buy college textbooks you won't find anywhere else. It specializes in rare and outdated books, music, and movies. Alibris maintains a network of independent bookstores listing their inventory on Alibris. Once you find the book you want, Alibris will ship it to you within 37 days

Their calling cards are rare books and books that are no longer printed, and they offer free shipping on orders over $39 (which is a small reachable bar). Alibris also makes it easy to navigate so you can search all your textbooks at once - Just enter your ISBN number in the search box. Alibris will display the "best price for textbooks" result and select the books to add to her cart. And in addition to academics, Alibris also offers music and movies!

Top features:

• 21-day money-back guarantee
  
  
• Extend your rental at any time
  
  
• Supports 6,000+ independent booksellers in the US and worldwide
  
  
• The site specializes in rare and out-of-print books.
  
  
• Shipping is free on orders over $39.
  
  
• Alibris will buy your books, too — and buybacks ship for free.

Website: https://www.alibris.com/