My wife & I took the basic 15 years ago. We stopped there.
My son in law & daughter took the basic last year and then the 1 week seminar, then each took the 90 day seminar. The in law went and took another 1 week again in the wilderness with dozens of others. I guess they've laid out $10 -$12 K or more. Thing about it is after 20 years of never having any issues with the son in law, during and after all his PSI training he's no longer the same.
Three major family fights with him over his changed disrespectful behavior towards the wife & I have basically made us realize he's been unleashed without proper supervision re-trained to think by PSI teammates of his with no credentials. We're told we must love him unconditionally. What a cop-out for rudeness & ugliness. I blame PSI 100%.
The sad part for my wife & I is 3 grandchildren are involved. The son in law feels uncomfortable around us, we feel the same around him.
Therefore we see very little of the grandkids now. Thank you PSI.