Originally Posted by Porcelain_Doll
(I really do hope this isn't illegal, by the way.)
I couldn't see how. Once you buy a book, you have the right to re-sell it. Now if people were lending the books, or renting them, there could be issues, but I'm fairly sure selling the book outright is perfectly legal. It goes without saying (but I'll say it anyway) that this is not legal advice.