Yeah, the big box guys seem to think that if they're selling the gun it's always rare and pristine, if they're buying your gun it's a piece of junk only worth a few bucks, and they're doing you a favor by giving you an extra $50.
Was looking at a 38-40, 1904 or so SAA at Gander Mountain, they wanted around $3400 for it. I offered a thousand. Guy told me I knew nothing about old Colts. Went home and brought back my 1906 38-40, in better condition than theirs, and told him I only paid $1100 for it. He offered me $1200 and told me I wouldn't find a better offer anywhere. I left and never went back, might explain why they went bankrupt.