I think it really depends on where you live. When I lived in CT, any sort of gun was rare at a yard sale. Here in PA, and up in Maine, you see it all the time. Often its "grandpa's old gun" laying around collecting dust that people just want to get rid of. I had a friend that worked at a pawn shop in CT back in the 80's. It was amazing what people would walk in with; old Colts, Winchesters, etc. He would look at their Winchester 1886 in nice shape, then show them a new model 94 for $250, and tell them that the best he could do for a used lever action was $150. People in the know laughed and walked out, those that didn't thought it was a fair deal. On this model 70, there was no price tag on it yet, so I offered $500. I knew it was a low ball price, but they were happy with it. You could tell they thought it was more then it was worth. Good deal all the way around.
Larry