Paying too much is subjective. Maybe they don't mind the higher price and just want the game (to play). There are always two sides of the equation.
For instance, there's this PS1 RPG called Tales of Destiny 2. One week it goes for over $100, a few weeks later there is one auction that sells for $35 complete/shipped. It's a crapshoot!
agreed, i had the opportunity to buy ninja gaiden trilogy on snes for $40, but i passed because i felt it was too much for that particular copy (looked like ass on a butt)
but now i look on ebay and ones that are worse are going for 3X that, WTF?!
as for DEII, it's going to be money, and lots of it I paid $200 for mine, and if memory serves, Mati has a copy that he paid about that for.
*EDIT*
yeah, i paid a lot, but it was from a regular here and the game is sooooooo much better than #1 imo.