UK got Launch edition which was just 200 cars in what Abarth had deemed the most popular combination to get them to owners quickly at a guess (oddly seems they were right about the spec), nothing special over another one you could buy, no plaques or owt. The European market got the Opening Edition which had a numbered plaque, SS as standard with climate special mats and steering wheel (possibly kick plates too) purely for the first 200 ordered from the launch of manufacturing.
They are considered a collectors edition as so would command a premium over a standard A500SS with a similar kit level but no idea what one would actually cost. I suppose how much someone would be willing to spend on a left hooker, 15k possibly would be gettable... from a complete nut job.