Just out of curiosity, would variable pricing be impossible for some reason? Okay, so maybe Godzilla had to be $9K because of all the stuff they crammed into it, but if another title doesn't have as much of said stuff, why couldn't it be, say, $8.5K? Charging the same price for a "lesser" product just invites cries from people who feel like they're being ripped off.
I'm trying to think of another industry where every variation of a product that a manufacturer releases has to carry the exact same price tag...