Your prices are about right. Only thing you missed were the individual MOVE and Kinect systems.
360 4GB - $150
360 250GB - $250
360/Kinect 4GB - $200
360/Kinect 250GB - $300
Kinect - $99
PS3 160GB - $250
PS3 320GB - $300
PS3/Move 160GB - $300
PS3/Move 320GB - $350
Move - $79
Wii - $150
Only thing is Microsoft will probably announce their price cut at the E3 and it might happen immediately. If not, it'll happen in Sept. Sony probably won't announce their price drop until October because they will be spending a lot of time on PSP2, PSPhone and their exclusives. Sony is making money on the PS3 Slim, so the longer the delay of a price cut, the more profit they will make. Nintendo will annouice their price cut either at the E3 or TGS.







