$300 on a good day.
Sorry but it's just a barrel and there are no more frames.
Somebody wanting a 22 is going to buy a complete bolt rifle for not much more than $300.
All the old farts like us already have all the barrels that we will ever need. That's part of the reason that S&W closed TC. No demand.
You would think, but check out what they are going for on Gunbroker right now. I would say $500+ easy.