According to a guy on CAG (Cheap Ass Gamer) he has leaked a picture of 4GB Kinect Bundle for $250. Regular price is $299.
It's a roll back, so it might be temporary. But just thought I'd give the heads up.
He saw this on joystiq.
http://www.blogcdn.com/www.joystiq.com/media/2011/08/img8379530wmed.jpg
It's just that simple.