These sold for $1000. Just like everything in the marketplace, the market decides the price (taking rarity, edition etc into consideration)
That does not justify a $500 premium. You do realize that there are certain things that are very rare and worth pretty much nothing? I'd like to see an example of 'the market' and other sales of the first edition, because if there was interest and the price was right, at least someone would have put a bid on it.