This deal has ended.
Buy.com has this ChargeBlock Car Charger for iPad/iPad2/Xoom for $9.99 with free budget shipping, the lowest price we could find by $15. This adapter plugs into the cigarette lighter in your car, allowing you to charge your device by USB port. It comes with a 3 year warranty. Sales tax is only charged in CA, MA, MD, NY, and TN.