If the bore is bright and clean muzzle gages low and throat gages well and its actually head spaced and sights are square its a even trade. Also if its been drilled and tapped for a scope its not worth that value. If the index marks aren't lined up its liekly the sights aren't either
This is one of those deals where it needs a very thorough inspection.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent