Originally Posted by Nate the great
If you can only use it for 180 days, then it is not a purchase, it is a rental.
Quite true but I've never gotten 1/2 of the purchase price back for a textbook when I sold it at the end of a course. I wonder if they give you an option to extend your license to permanent. It's nice to have the option to essentially lease or buy the book but I wouldn't want to have to make that decision before I read it.