Donald Draper wrote:
SO far the first disc is fine. Maybe I just got lucky!
I think you got lucky, as you said f there was something wrong with the discs the customer could have gotten a replacement instead of selling them at a loss. Whoever bought them probably ripped the discs and decided to get some money back by selling the set. That's the only way I can see a used set showing up right after release.
Whatever the reason was, you're a lucky guy.