Microsoft Blue Track Mouse Spotted

Microsoft is teasing us with the Blue Track mouse that comes with a blue LED tracking mechanism paired with a wide-angle lens. Sources on an Italian website has shown that this system will work on more surfaces compared to laser, which is pretty cool since I still get frustrated with glass tables. There is no further information available for the Blue Track mouse, but we do know that Microsoft will be rolling it out this coming September 9th. How much do you think this model will cost?