The good news is that the Beta appears to be stable. It also will allow you to run Mac OS 9 or Mac OS X beta turning your machine into a dual boot machine. This is good because it allows you to test OS X on the same machine as your work machine. Not many people have an extra G3 or G4 around for testing. Yes, but with grumbling at the fact that I have to pay to test something.
Most companies pay people to test programs in-house.
It seems ridiculous to make users pay for a beta version, but I feel the necessity to test it out and so, like many other users, must meet Apple at their demands.