How much of a refund will I get for returning a used textbook through amazon.com?

Yesterday I ordered a used textbook that was the wrong kind, but now it is too late to cancel that order. So, I'm wondering from other people how much of a refund will I get if I try to return the book??? I know I will probably loose around $30.How much of a refund will I get for returning a used textbook through amazon.com?
you can put in the book in amazon's text book return spot and it will tell you exactly how much you'll get back. or you could always try to sell it on ebay. I think you'd get more that way. amazon tends to not give much back for text books.How much of a refund will I get for returning a used textbook through amazon.com?
Amazon Marketplace sellers are required to accept returns even if the merchandise was exactly as described. Yes you can refund the price of the book and not the shipping charges. You can refund the item minus shipping and relist the item. If you return an item and the reason for return is not a result of Amazon error, the cost of return shipping will be deducted from your refund. Buyers can return new media items (that is, books, CDs, VHS tapes and DVDs) in their original condition postmarked within 30 days of shipment. If the item returned is not defective/damaged/materially different, you can assess a reasonable restocking fee which should not exceed 20%. For used media, defects/damage/material difference should be reported to you within 14 days of receipt and the returned merchandise should still be postmarked within 30 days of shipment. There should be no restocking fee charged if the item is defective/damaged/materially different.

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