It is not about a good deal at the last auction, but rather what the average value is for a particular model. $1200+ is a lot of money for a K22 Masterpiece, so it would have to be over 98% in my mind to be worth that amount of money. One buggered sideplate screw will cost you a couple bucks to replace, so if the scratch is on the screw, not an issue. If it is on the revolver, still might not affect value much.
Referring to SCSW4, an Excellent condition K22 is worth $1100, or 98% which I think is still a decent estimate of value. I see many high condition K22 Masterpiece revolvers selling in the $750-$850 range, so unless you are in a hurry, start watching online auctions, like Proxibid, since they almost always have them for sale.
I believe that K22 Combat Masterpiece would fall into the same price range.