If you're gauging a good dog and trainer by its ability to achieve 500 please move on. Th HRCH MH I'm working with and running is about to get her 500 points and I wouldn't buy the dog for $500.
You can run a dog with a 50% pass rate and still hit 500 points if you want to spend the money.
And no I don't own a dog that has 500 points. No want to at this time either. But to each his own.