I recommend covering it up but if they find out..maybe. Next time look up the college books on amazon or ebay for a lower price.
Sell it on amazon but specifically state the condition. If you LIE on the description and the buyer does something about it you will get into deep trouble if amazon repays the buyer and goes after you to get their money back. hence, dont try to pull a fast one on anyone without expecting the buyer to pull a fast one on you.