XM Radio Tuner plus FREE Car Kit
The XR9 Tuner Features a Built-In FM Transmitter which broadcasts XM Satellite Radio directly to your Vehicle’s FM Radio or to the Audiovox (optional) XB9 Boom-Box Accessory.
After rebates:
http://www.ecost.com/ecost/ecsplash/shop/detail~dpno~191476.asp
Shipping comes out to $8.50