CowBoom offers the Powermat Portable Charging Mat in Black, model no. PMM-PT100, for $9.99 plus $5 for shipping. That's a $5 drop from our mention five weeks ago and the lowest total price we could find by $23. Sales tax is added where applicable. This mat wirelessly charges up to three Powermat-enabled devices and includes a universal powercube with eight tips for charging other electronics.

Of note, you may need to try to add this to your cart multiple times before it appears.