I have four guns. One is collectible and I've never fired it. The other three are not collectible and I fire them pretty often, but not too often at real people.
It's ironic that I've held onto a WWII Japanese rifle that my dad smuggled home after the war. For a while it was worth decent money, but then someone discovered a long-overlooked cave on some island that had cases of them, all well-preserved and "new". Value of my old used one dropped to nearly zero.
Oh, and back to the real subject. I have lots of stuff I'd sell, but you have to come dig through the garage and my office and find what you want!