That stock set came on the Norinco 84S-3A.
Funny, a couple of weeks ago we were discussing how impossible to find that stock set is, and like magic you post a set you have!
Even being a collector of Chinese AK variants, I would have a hard time putting a price on that set. Only someone with the 84S-3A would want one, but they are as rare as an honest democrat(sorry). These days $200 or more would seem to be proper. You might look up what a standard Chinese wood set is selling for assuming you can even find a set of wood, and then add about 50% to that.