You bought it. Most people point to recent auction prices as the benchmark of current gun values. The biddders all decided what that gun control as worth on that day in that condition. You might have even been willing to go much higher in price but other bidders, the other buyers in the market did not make you. We have all seen two bidders run up the final price as they fight over what the value of a gun is to them, that day.
Dealers may list a gun for sale and never sell it because their asking price exceeds what buyers are willing to pay for it. Asking price exceeds market price. But when a gun sells, like your in did at auction its price is established that day. You may value it as a good deal and hope to get more out of it if you sell it later. Id expect a gun like that to bring more if the barrels are solid and the looseness is fixed.