I talked to them and they said the plan is 16 weeks, with ongoing maintenance as needed. I am not sure where you are seeing that it is a two year plan.
They offer the main 16 week plan for $584 and the maintenance phase is as needed is $70/mo. I also price checked competing supplements and they are not any cheaper. The thorne sf722 is sold for $32.00, McCombs product is $30? Not sure where you are getting your info from but.
What are the underlying causes his plan does not address?
I am just trying to ge the best info, if you have better information please share.