As is, I would say 800-900 rifle only, 1000-1100 with scope. It's better than a stock rifle, but isn't worth what you have in it. Everyone is looking for a deal.
Alternatively, if you have the original stock, you would probably get more parting it out. i.e. sell the mcmillan separately, sell the rifle with the original stock, sell the scope separately. Should be able to get 3-4 for the stock, 6 or so for the rifle, and 4-5 for the scope.
Or so as above, and use it for a build platform. You have a good foundation.