The funny thing is that, if GameStop would simply invest in a professional resurfacer, many of those "damaged" games will work once more.
I once purchased "FEAR" for Xbox 360 with the infamous "circle of death" that occurs when the console is moved while playing. The manager did not want to sell it to me but decided to do so anyway, because he knew I had this machine.
After a couple of tries, the game worked perfectly.
A little investment will go a long way for them.