http://www.searshomes.org/index.php/2011/07/03/oklahomas-fir...
That house would only cost $47k in 2016 dollars.
The TH movement is primarily about economics. I don't think it would exist if there were new quality houses available in that price range.
Pardon my french, but isn't it just fucking amazing how we've 'progressed' with automation in a century and many of us are still working for decades just to afford mere shelter? It's often not even to a high spec.
I sometimes look at that Primitive Technology guy and think "You know, that looks like a lot of work, but it only took him three days to construct that hut and he could rebuild it every year and it would still be way more cost effective per labour unit than anything we're doing right now!"