I really don't understand it. Only thing I can see is that its a shorter barrel than the standatd last ditch types. Look at the number of bids for it. Its up to $1400 now.
Must be something special about it, here are a couple of more:
http://www.auctionarms.com/search/di...temnum=7082030
http://www.auctionarms.com/search/di...temnum=7082167
http://www.auctionarms.com/search/di...temnum=7088095
rk