Dan, your wine probably isn't worth much. Even though it's a good older vintage, Cordoniu isn't a collectible label. Check http://www.winesearcher.com--recent retail prices for similar bottles will give you an idea. If you don't find it listed, that indicates it likely has no secondary value at all.
My wine shopping and I have never had a problem. Just a perpetual race between the bankruptcy court and Hell.--Rogov