New at Bud's Guns Shop they were going for $418, but they don't have that model in stock. If it is in very good condition, I would say it would be a fair price. Is it at a local shop or an individual seller? That would also be a consideration for me. A face to face deal at that price would be good for me since there would be no paper work...at least in Wyoming that's how it would go.
They are nice rifles and fun to shoot. I have two in .44 Mag that I love.