Reasonable on 01 September 2008
Given Nintendo could probably raise the price of Wii and still have it sell more than 360 and PS3 combined, while 360 has been outsold for majority of weeks for a while by both Wii and PS3... I'm going out on a limb to suggest the 360 would hit that price ahead of the Wii.
Try to be reasonable... its easier than you think...
