Earthpulse on Superhuman Radio

Anybody try this? It's a device that helps you sleep. The host Carl Lanore uses it, loves it and says it works. The site offers a  90 day money back guaranty. But at $500, I'm not so sure I want to be the first guy to get burned by this.

Has anybody used this?
Has anybody had an issue returning this?

www.superhumanradio.com/core/shows/show08252007.htm
www.earthpulsetechnologies.com/