The ST-56 was a very limited item--available for maybe ten minutes one Saturday evening. Maybe one of the lucky few will put one up for sale, but it won't be cheap.
If you keep looking, you might be able to find a FSH in the Exchange or on eBay, but it won't be cheap either.
But the a War Boar is another story entirely. Last time I looked, there was one in the Exchange--black with snake skin--for $255, including shipping, which is almost $100 less that it cost direct from Busse. There's one just like it on eBay that's in its fourth listing and not selling. The minimum bid this time around is $240 (+$12 shipping), and so far there haven't been any bids.