This deal has ended.
Buy.com has a model of the Harman Kardon GPS-310 System on sale for $199.99. Featuring a 4" QVGA touchscreen and voice-prompted navigation, it also comes with maps of the US and Canada pre-loaded on its memory card and can play digital music files. New Google Checkout can get an extra $10 discount. Shipping is free and there is no tax (except CA, MA, MD, TN).