Amazon is now letting students rent text books from them for one semester with free shipping there and back. One macroeconomics text book Amazon had for rent during testing was  $47.75, which is a large discount from the $170.46 a student would pay to do the same thing: use the book for one semester and never read it again. Chegg, one of the biggest textbook rental sites offers the same macroeconomics text book at $57.99, which could mean that students using Amazon could be saving even more money.  [Source: Geekwire]