I picked it up at an antique shop here in San Antonio. It had a set of Fremont and Caesar's dice on its table, which is what I had wanted to buy but the owner wanted $25 for the crapshooter and the dice.
Here it is in action: www.youtube.com/watch?v=EfuHv10tuOU
Here are a few listings on ebay: http://shop.ebay.com/?_from=R40&_trksid=p3907.m38.l1313&_nkw=Cragstan+Crapshooter&_sacat=See-All-Categories