It's hard to come up with accurate numbers for how many copies any game can manage to sell, but its been pretty firmly established that Killer7 sold even worse than No More Heroes.
But look! New Super Mario Bros Wii just outsold COD:MW2! They need to include coupons for the art-y games in those boxes. Fuck, not even coupons... just adds. A .5% sell-through rate would mean an extra 50,000 copies of the art game sold. That's good. Ninty needs to use their clout for something.
So, roughly, 2 copies.
Fuck it. I'm just waiting for Heavy Rain.