Two hundred clams is about the going rate for a middle-of-the-road used private sale. There are collectible makers, years, and variants (including unit markings), but it's not likely that an average random gun will be the jackpot. There are many with or without the lanyard ring; either is acceptable depending on your requirements.
Does it have the sheet metal rear sight riser for using the lighter bullets in modern loads? Only place to find the 200gn projectiles these were sighted for is in surplus ammunition at gun shows; Winchester and others produce small amounts with about 140gn that won't hit where aimed.
Site Sponsor Frontier (up top) has got 'em right now, in two slightly different finishes (one listed under Surplus Rifles for some reason). Under $250.