Michael;
Perhaps down the road a bit; I just recently acquired it relatively cheaply, and it just kind of fits in with my 'oddities' collection.
Perhaps I am imagining things, but I could have sworn someone replied yesterday just before the move, saying they ran around $350, which was a bit higher than I paid.
Thanks for the interest though; they are fun to shoot if you find one, but quite loud, and a touch awkward to shoot accurately, not surprisingly.