Exactly what I paid for each.
PS3 - $600
360 - $350
Wii - $100*
*Edit - Actually looking back on how much I have actually used each of them, Wii would be the only one I would want to pay significantly less for. Not trying to hate, just being 100% honest. I would buy a PS2 again before buying a Wii if I knew then what I know now.
iPhone = Great gaming device. Don't agree? Who cares, because you're wrong.
Currently playing:
Final Fantasy VI (iOS), Final Fantasy: Record Keeper (iOS) & Dragon Quest V (iOS)