Powermat: the crazy charger that lets you go cordless

Back to my Technical Entrepreneurship project my group kept telling me about some mat that charges everything without a need to plug in those devices. Having never heard of this, I decided I was going to figure out what all the fuss was about. Essentially, when you plug in this mat that acts as a charging station (with a small price tag of around $75) you can set any device on it to charge, providing you have purchased a Powermat receiver (about $25 on Amazon.com). So for about $100 you will never need to plug  your phone in again? This sounds like the most ridiculous thing I have ever heard of. I guess you would never have to worry about loosing your charger but really.. 100 bucks to charge a device?? Obviously someone thinks this thing is worth it because the company is still in business but we will see for how long.

Another concern I have is how much energy do these things take to 1)power themselves-since they are always plugged in and 2) power other devices? I couldn't find much online about their energy consumption but it would seem like this thing could be a power eating machine. What have you guys heard about these things?

To watch a video about what this can do follow this link.