Without seeing the rifle, or photos of it, it would be hard to say. In my opinion, with the info provided, powder coating is a minus, not sure if the stock is factory or not. (there was one black fiberglass av model), the fluted barrel is most likely aftermarket. To me most of that is a minus to the value of a factory Sako AV. Really nice AV's are selling for $1200- $1400 at the very high end. So, in my opinion, for what its worth, I would say its worth less than that. Without seeing the rifle, or knowing the specs if it is a custom.