My wife was having back problems with all the walking we did in Florida. We saw Rachel Ray and the MBT shoes. Yes they are very pricey. After searching the Internet we found some sneakers called Earth shoes. These were only $125, compared to $250. We ordered them from Zappos.com. They have free shipping and the shoes arrived 24 hrs after we ordered them. It takes a little getting used to but my wife has not had anymore backaches since. Money well spent.
'Earth Shoes' were popular back in the late 60's.
The selling point was they had a 'negative Something',
which met the heal was lower then the sole of the shoe. I had a pair of them during my 'hippie'? days, but don't remember much about them