A Colt King Cobra came into my LGS on consignment today while I was there. The year of manufacture is approximately 1990, it's a 6" SS model, and literally brand new/never fired. The customer listed it for $900. I know this is a desireable (but not quite a Python) pistol. So I guess I'm asking what this gun is worth? I make a phone call and they'll set it aside for me. I'm interested, on the fence, and admittedly a little ignorant here. Great, mediocre, or no-so-great deal?