No I dont think so. $50 is too expensive. Most of my power bricks are for devices that consume more than 22 watts. My cell phone does have a usb charger. The transformer has a footprint less than the size of a US outlet.
Too expensive, too late.
Their site only has them at $25, and I'm pretty sure that prices will inevitably come way down, especially if they're going to be selling to contractors and major distributors.