I have a Green Mountain SS Bull 20" barrel for a 10/22. I don't believe it has ever been mounted. I think they cost around $155 shipped. I would take $105 FTF or shipping is on you. I could meet in Greenwood. I'm in Brown county.
I have a Green Mountain stainless bull barrel that is either 16 or 18 inches. Probably doesn't have 100 rounds thought it.
I also have a Kidd Ultralight barrel that is NIB. I actually have two of these, one is threaded and the other is not. Both have matte black finish. The threaded barrel would come with a Kidd stainless compensator.