Not sure what the go is but some of the size/colour combos are a lot cheaper than others.
e.g.
Black 7.5 US: $59.44
Dark Brown/Black 7 US: $63.12
Dark Brown/Black 8 US Wide: $68.09
Black 11.5 US Wide: $78.11, Maybe not worth it?
Most/All other sizes are more than $100. I got sick of checking other sizes so please if you notice a size colour combo that is cheap please let us know.
Some mixed reviews on Amazon.
Edit:
I had another look and some of the shoes that do have some history on the camels show that it hasn't always been an expensive shoe. Some have been quite cheap. Looks like they are heavily discounted on the Amazon US website which could be a indication of something.
I think as long as you can get one of the cheap ones it's not too bad. Not as great a deal as I first thought though.
"Walking shoe"
I'm no expert, but I am pretty sure you can walk in any shoe.