Many people in the permaculture community have had similar experiences with Nicholas Burtner. Ranging from arrogance and a know-it-all attitude (sadly without knowing it all) to a picture of Jesus on his wall where he teaches that conveniently looks just like him.
I took a short workshop with him and found his information to be very basic and when trying to correct him, he is quick to deflect or dismiss.
He pays no attention to accepting feedback (a permaculture principle) especially from people more experienced from him. He also relentlessly advertises any class that he can by giving paltry information that links to his website.
Reason of review: Bad quality.
Monetary Loss: $240.
Preferred solution: Let the company propose a solution.
I didn't like: Delusional person, Lacking knowledge, Messiah complex.