Maybe there's no clear line between the two, but there's a difference between pirating something out of print which has greatly appreciated in value due to rarity far beyond the typical asking price for media of that type, and being unable/unwilling to pay the typical retail price of a currently in-print item. I may have tried to tell myself otherwise, but when I was pirating blockbuster video games in college it was just because I didn't have $60 spare, not because there's anything inherently unreasonable about a $60 price tag for the game. Not least among the reasons why is that the original creator won't get any of your money for the out of print item.