Without knowing what, if anything, was "fixed" on the inside you are buying a gun which may need a little more fixing. That said I would not go much above $700-750.00 depending on the over all rest of the gun condition. If it had 28" barrels I would go more but short barrels are out of fashion these days.
Screwed up screws are alarm bells to many of us. Just like top levers to the left of center. When you come across a gun with alarm bells going off do not be afraid to walk away. Think of it as a project gun and hope it turns out to be just a shooter.
