Meritline offers this USB Charging Adapter for Apple iPad in Black for $4.99. Coupon code "MLC510FN" cuts it to $3.99. With free shipping, that's the lowest total price we could find by $3, although we saw it for a buck less in January. This device purports to enable USB charging for devices that don't typically allow direct charging from a computer's USB port. Deal ends May 12.