Saw one for sale in a shop this morning. Its the older model with the lever like a single shot shotgun. Maybe called the Aristocrat? Really nice wood and the metal was still really nice and blue. Caliber was 22-250. I've never owned one and kinda always thought they were a really neat rifle but have no idea of value other than Gunbroker where the prices are crazy. He's asking $750. Is that a fair price?