Not supposed to include Quidco but there's not much competition in the Kinect market so I thought this was worthwhile anyway... This is finally back in stock at the Microsoft store though quidco has halved their % payback to 10 now.
While I'm at it, worthwhile mentioning the lowest prices I can find for various titles...
Kinectimals @ shopto.net: £28.85
Your Shape @ shopto.net: £26.85
Dance Central @ Comet: £29.99
Motion Sports @ Comet: £19.99
Joyride @ Comet: £29.99
EA Sports @ Amazon: £46.99
The lot could be yours for a mere £299.65!