Haha, nice. I have a nice recommendation: If you're confident enough to do it, always ask the attending shopkeeper to check the back for any copies of an obscure game. It totally leaves the sales room empty for you, and usually other people there stare at you and smirk, wondering if they could get away with it too.
EDIT: The trick is making sure you're grabbing the right games. The $20 and under section has the games in the cases, but the $25 and up cases are empty. They're not totally retarded.
But seriously, great article. Made me laugh and get a little bit of insight as to why my mother threatened to kill me if I didn't sell my old Pokémon games when I was 9.