I know this doesn't directly answer your question.. But Robert Wayne makes a similar shoe called "Floats" that are in the $30 - $50 range.
I have the floats, can't compare them to the swims.They're really uncomfortable and hurt my feet after a few minutes.
Anybody here have swims & can tell me how they run? I’m usually between 9.5 & 10.5 in most shoes. I think I’m a 10 in cole haan. What size swims should I order?
They run a bit larger