Shnoop offers the Jabra USB 2-Port Car Charger 2-Pack
, model no. WH-860, for $6.99. Coupon code "SD2PORT1" cuts the price to $5.99
. With free shipping
, that's $24 off list and the lowest total price we could find. It features one 2.1-amp port and one 1-amp port for most USB-driven devices.