Here’s how it works [at www.Chegg.com]: students find the books they want by searching by ISBN, author, title or keyword. The rental price for the semester or quarter is just 20-30% of the full retail price, and are delivered within eight business days. At the end of the term, the students receive a pre-paid shipping box to return them. Students are even allowed to highlight books (but no writing in them).
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Techcrunch - www.techcrunch.com referring to Kleiner Perkins backed company www.Chegg.com.
This seems like an awesome company - what a great idea - I will definitely encourage Shari (my wife) to use them. Should save us a ton of $$!