I'm surprised they are still available. I didn't see any, this summer, in the stores around here. Only the stretchy ballerina flats... which are more comfortable anyway.
Here are my Cambons from 2 summers ago. Mine have a bit of a heel... the ones with the white CCs are totally flat. Also, Hilary Duff's are the really flat ones, I think.
Bloomies/SCP have them right now in the beige color (store only)