Retail titans Best Buy, GameStop, Walmart and Amazon agree: Kinect will cost $150. Microsoft will not comment on the posted pricing beyond saying that it's speculative. Microsoft's Xbox bigwig Aaron Greenberg wrote on Twitter (twice), "No Kinect price announced yet, retail price estimates are purely speculative, final price & pack-in details are not yet determined."

We understand that the retail listings are speculative, but it may be worth putting aside $1.08 aside every day until Kinect's release just in case -- unless it ends up being more.

[Thanks, Elias]