Shotgun forearms get lost while hunting and they get separated from guns during maintenance, etc. And a gun is pretty much useless without the forearm, so they absolutely have value.
Pricing depends upon condition, presence of engraving, rarity, and demand of course. Naturally, a small frame forearm iron for a 28 ga or .410 will be much harder to find, and more valuable than one for a more common # 2 frame 12 ga. The best way to get an idea of realistic pricing is to spend some time watching actual sales on Ebay
Thanks Keith for the information. Well I talked to the fellow about the Parker irons, told him no interest in them, only one guy out of 199 clicks.
He told Me about a lot of the other Parker Parts that He made time to look for, but Since no body else seems to be interested in them, I am Not going to list any more
of the stuff He has here on this site. Waste of my time.
Dirty Harry