If you are happy what else matters? Do understand that cabellas tries to buy guns for 40-60% of their expected selling price. So a 500 dollar offer may be an expected 1200 retail sale price. You are selling for a heavily discounted price when you deal with them
Also some stores sell certain type guns better than others. One I know can sell Winchester Model 12 for top dollar and another about two hundred miles away just has no local market for the same guns. Your gun may just be an item that they know will not sell fast or for top dollar. The fish scale finish is not in high demand, the location of safety turn off some and the Damascus barrels are known danger selling points to many. I've been told a few cabellas stores will no longer buy Damascus guns at the direction of the stor manage.
But it's like the Model 12s liked by some and not even a flicker of interest for others. If you want to have fun loan a pump gun to a person who only shoots autos. When he returns to his auto he will pull back on the fiore end after first shot.