You very incorrectly assume that Dr. Jorgensons work is the only data avaliable supporting prices drops on the order of those described by many Fairtax advocates. It isn't and you have been presented with those other sources many time and have chosen to simply ignore the data.Name one other source.
Be happy to and not for the first time either.
Costly Returns The Burdens of the U.S. Tax System by Dr. James L. Payne
(Now it's time for you standard evasion.)