If you are a working professional, this is absolutely worth every penny. The method is safe. I can't
say it's 100% safe because it IS possible to hurt yourself doing this, but you'd have to be REALLY
REALLY stupid to do so.
I've performed this many times so far- on stage for over 500
people, in a living room for friends, in a restaurant on the bar, at a charity event outdoors, ect.
It is a KILLER, and the method is so safe and easy that it allows you to focus on your performance.
All in all, I'd buy this again in a heartbeat.