I rented a book from Chegg and forgot to return it on time and was charged an extension fee and a $70 replacement fee. I was told that because I did not contact Chegg before 7 days of billing I would not receive a refund of my replacement costs.!. Credit cards do not post in 7 days in order to realize I was billed! They said they would buy my book for $28! What a joke! Word of advice when renting text books, Amazon gives their customers the courtesy of refunding full replacement costs! Id never use Chegg again!