This deal has ended.
Buy.com has the Monster iCarPlay iPod Transmitter & Charger for $50.61. Pay via Google Checkout and you'll get a $20 off $50 discount that drops the price to $30.61. Shipping adds $6.29. This is the lowest price I've seen. The iCarPlay, which is part charger, part FM transmitter, is normally $60-$80 before shipping and tax (ie: $79.99 at CircuitCity). Buy.com does not charge sales tax (except CA, MA, MD, TN).