They can pay whatever they want, it is the cost of business. However, they will have people like me that would rather donate to someone more in need than stqnding in the shop for an hour and leaving feeling robbed. So, while they may have 20 copies of Dark Knight or HP, I doubt they have any copies of The Secret of Nimh, Fawlty Towers, or The Reduced Shakespeare Company, and now my local library has them.