So that's what you'll need to play motion muliplayer on 3 consoles
X360 Kinect= 179 149= 328$ (no game)
PS3 Move bundle 2nd wand 2nd navigator controller = 399 49 29= 467$ (no game)
Wii (Resort / WM ) bundle 2nd wiimote/motion plus bundle 2nd nunchuck = 199 54 19 = 272$
add also a balance board to the wii and it has 371$ price, it's about 40$ more than kinect but it has 2 games in the package (resort wiifit plus)
I don't think kinect and (expecially) move will steal very much expanded audience from the wii....