I wouldn't even think about it for that much, but hey, people buy $200 Rock Hero bundles all the time so who knows.

http://www.joystiq.com/2010/05/26/rumor-project-natal-priced-at-150-dollars/

If a report by Edge proves accurate (wait till E3), then Pachter's estimation that Project Natal will cost less than an average game is off. Instead, a source backed by Edge has alleged a $150 price point (with plenty of room to drop) for the forthcoming Xbox 360 motion tech camera -- or $300 when bundled with the Xbox 360 Arcade console. Additionally, the source has suggested an October 26 worldwide release -- give or take "a few weeks."

Of course, both the rumored pricing and release date remain uncorroborated (we repeat: wait till E3). But, hey, that doesn't mean we can't have a bit of fun with the supposed intel. And by "fun," we mean, "host an online poll asking if you'd spend $150 on Project Natal" ...