* Delivers the quality wireless experience that you enjoy on Xbox 360
* Easily connects to one of your PC's USB 2.0 ports
* Compatible with the xbox 360 Wireless Controller, the xbox 360 Wireless
* Racing Wheel, and the xbox Wireless headset
* 2.4Ghz technology with up to a 30 foot range
* Cable length: 160 cm
* Comes with Drive CD and USB cable
* Size: 180*115*45 mm
* Weight: 158 g
* Model: E53673
To get this price use discount code "HOLIDAY15" (15% off).
It's not an official product (is there even an official product for using a 360 controller on PC?), but fingers crossed it'll work ok.
This beats Dealextreme, who have them for $13 delivered (£8.50)
Next cheapest I could find were some ebay sellers @ £10+
As it's coming from Hong Kong I expect delivery will take ~2 weeks.
They also have them in Cyan, Pink and Blue.