They were minted in 2 runs and they are all sold out. The only way to get this coin now is VIA trade or that one auction site. I know the first run was 1,000 coins and the 2nd was I think 300. so there is atleast 1,300 of them out there.
If you have coins to trade I am sure you might find someone that is seeking a coin you have and has one of these nice coins for trade.