I went to a gun show this weekend, kinda wanna purchase a .22 semi-auto pistol for my son, wife and daughter to shoot. These guys were selling used stuff for new prices. On top of that i get to pay sales tax. I am interested in a Ruger MKII/III most likely. It doesnt have to be fancy and a 4inch barrel would be fine. What is reasonable to pay for a used one? I could internet order and pay FFL to receive for the prices these dill holes were trying to get. Are these that hard to come by used?