Meritline offers this USB Charging Adapter for Apple iPad 2-Pack in Black for $8.99. (It's the second option.) Coupon code "MLC712WN" cuts it to $4.99. With free shipping, that's $2.50 per adapter, a buck under our per-unit mention from May, and the lowest total price we could find for this adapter in this quantity by $9. This device purports to enable USB charging for devices that don't typically allow direct charging from a computer's USB port. Coupon expires after 200 uses.