I was on Numrich arms website recently, gunpartscorp.com and they have a large selection of H&R shotgun barrels. Most for 89 dollars without extractor. I ordered a 12ga 28 inch full choke barrel, intending to use it for a relining project and a .22 hornet extractor for 8.80 and about 10 dollars for the springs and rest of the bits for the extractor. It all arrived Saturday, the barrel and parts are brand new and with just a little fitting it locks up well on my receiver.
Though I would share the information, if anyone is looking for a shotgun barrel, or a donor for a project, I don't think the prices are too bad.