Hey, TBS has a fine stock of Mantis Shrimp. I visited them Saturday and they had at least 4 or 5- and they are always getting more in from their weekly dives. I actually am thinking of buying one and setting up a small 5 G nano soon. They are $9.95 a piece, and they had a really big one that I thought was so cool. It would lift up it's head and stare right at you with his claws out and I thought it was awesome. Then another smaller one went psycho when I was looking at it- and tried to jump out of the tank!
Good Luck Dan, I'm sure you'll find one sooner or later. Do you know where GV is located? I thought it was closer to me than you, if TBS is 4 hours away from you, but I am still searching for directions.