I'll throw a wild guess out there and say, aside from something being essentially worth what another person is willing to pay for it, somewhere between $100-$175 would be a fair price. But that's just my opinion. I had one, and they function fine, but are not particularly outstanding in any way. I'm not aware that they are "collectable" and enhanced in value because of that. Compare them to many other semi-auto 22's that are available today for around the $200 mark.