Meritline offers the Belkin F8Z145 Dual USB Power Adapter for $19.99. Coupon code "MLCK802PNL1" drops it to $15.99. With free shipping, that's the lowest total price we could find by $6, although it was $3 less in January. This adapter allows you to charge multiple USB devices at the same time. It also includes a USB to iPod / iPhone / iPad connector, plus mini-USB cable. Coupon ends after 100 uses.