Found Microsoft's Xbox 360 Wireless Steering Wheel available for $103.51 plus a few bucks for shipping from GoGamer.com. They're in CA so if you live there you'll be paying tax; but other than that a great deal. Picked this and Forza2 up for $174 shipped to Seattle, WA.
Link to wheel: http://www.gogamer.com/WIRELESS-RAC...VVproductId5702547VVcatId444710VVviewprod.htm
Link to wheel: http://www.gogamer.com/WIRELESS-RAC...VVproductId5702547VVcatId444710VVviewprod.htm