Well, when "Project Natal" was first spoken of, Micrsoft has indescretely estimated the cost somewhere between $80 and $150 dollars. This was early this year, probably february or so, but Now that we've seen it's capabilities and know that Kinect can take motion sensing without a controller beyond just gaming, I'd say that $150 is a reasonable price...I mean, the only people that seem to be truely complaining are lazy gamers with no jobs anyway.