The authors point resinates for me, and I've seen a different but related model by friends - A couple (Dentist and small business owner) living in semi-rural Kansas (city pop ~40K). Their contention was that normal people in a normal week eat some food, go to work, do kid stuff (school, practices, etc), workout, watch some TV, and sleep a bunch... And theres really nothing about that that is needs to be in a major metro, so they moved to a place where college educated adults from the coasts dare not go- Kansas. The recognize the useful stuff from the metros are the food, culture, etc... and what they did was take a trip one a month to live like kings...
Can you imagine how much more fun you can have with ~400K of disposable income (after living expenses)? Seeing the trips they've taken and the adventures they were able to afford because their 7 bedroom 5 bath house cost ~400K (movie theater and all)... was mind boggling to me. It was all for the small cost of not being able to get access to the metros during the week. Seems worth it to me...