I am on my third pair of these shoes and while I do think that they are overpriced for the quality, I also love to wear them.  They are all man made material and if you wear them daily like I do then do not expect them to last more than one season.  They may last longer if you do not wear them outside or get them wet, but under what I would consider normal conditions the uppers will start to crack and some of the nubs will wear down within a few months.  I have never had the bottom fall apart in chunks like other reviewers claim.  They do tend to get stinky so I spray them with Lysol at least once a week.  We have hardwood floors in our house & I have had foot problems so these have helped greatly.  My Podiatrist took a look at them and approved.  I am about to buy my 4th pair so you could say that I recommend them even with their flaws and inflated price.