There's a guy here in Calgary who recently purchased one of these out of a California collection... I haven't seen it yet
My understanding from Grant is that most Abarth's are bought/sold through personal contacts, with few of them going on the open market, I know he purchased his car from a collector just simply because he asked if the car might be for sale...
I've seen one of these once before (when I lived in Ontario) and was amazed at how tiny they are, made more obvious because they are so low to the ground