Gigacity_Amn via Amazon offers the GMYLE(R) 17-watt Dual-Port USB Wall Charger for $12.98. Apply coupon code "EQMG7OSY" to cut the price to $8.98. With free shipping, that's $4 off and the lowest total price we could find. (Non-members can spend $35 to qualify for free shipping; otherwise, shipping adds $6.98.) It's usable with most USB-driven devices.