The fact that their next workshop is to take place in the town of Sonoma makes me suspicious. Sonoma is home to Scientology factions and a secret Gurdjieff/Ouspensky cult with no name that is headed/once headed by Anne Haas, which I am in the process of exposing.
Rest assured, they have nothing to do with elron and company.
My wife and I have done level 1 and level 2.
I was a little nervous at first, they don't discuss specifics of what happens in the workshops, and that rang an alarm bell with me. However, having been there, I agree with their position. If you knew what was coming at you, you would chicken out, or make different "safer" choices, and you wouldn't get as much out of it.
I can tell you that there's nothing I've seen that's coercive in any way.
There's no books or tapes or other expensive junk to buy.
There's no pressure to keep going, other than what I'd expect from friends who would want to share a good thing.
I do get emails from them letting me know when new workshops are scheduled, but absolutely no pressure to sign up, or to bring others, beyond that which you'd expect as above.
I know it's made a big positive change in our lives, and we intend on keeping with the program.
One thing to be aware of, and this is true for any group, not everyone is completely honest. But that's not a fault of the group.
If you'd like to read what my experience at L1 was like, follow the link.
"Steve" and "Betty" are myself and my wife. When I wrote this, I wasn't sure I wanted to have that out there or not.