12 * 7 * 2 = 168 total hours of commitment for a program I know nothing about, except that if you ask me to do something I believe is a waste of time I have to burn five figures in billable hours to ride it out and get the refund or sacrifice the $3,500.

I highly recommend you provide details of what precisely you are selling -- you've raised the stakes for all customers, so pitch me that I'll have more success with you than on my own.