I have a mint condition 1100 that I want to sell. It's a 20 ga magnum standard grade. From what I understand its based on a 12 ga receiver and mag tube. It has glossy walnut with the white diamond on the pistol grip. The only thing that's weird is it has a cutts compensator on it. What is this thing worth? I've looked on gunsamerica and seen them go from $500 to $1300. That's a pretty big spread.