Gunshops are a terrible place to sell your guns! Unless you just want them out of the house, you really need something else badly or you didn't pay for them to begin with. I understand that the shop wants to make 40% (at least!) on a used gun and they have no idea how long it will take to sell many models. I don't blame them. The thing is- 1/3 the real value is a common offer. I recently was visiting a local shop when a fellow was offered $150. for a Ruger 77 in 7mm mag including the base, rings and scope. He wanted a S&W 629 44mag and took the trade.
