I took lessons from him in the 90s. I'd say his 9ball game (possibly his weakest game at the time) was around 650 Fargo.
However, when he was hitting thousands of balls a day creating the 60 minute workout, I'll bet he was 100 points higher.
He was a great instructor and charged accordingly, sold thousands of tapes, sold his own line of cues (Widowmaker by Greg Hearns), custom cases, and he was paid to endorse a few products. There was not much of a tour for pros to make money then anyway, so there was more money in instruction I'm sure.