I was just shooting my TR 22-4 this afternoon. I don't shoot it much more than once a year. When I do, I'm always shocked how stout the recoil is. Now the gun is light for caliber, but 200gr slugs over 5.0gr Bullseye feels like a 240gr LSWC over 10gr Unique in 4" 629. The 22-4 is rather light for a 4" N frame. Think 629 Mountain Gun, which is lighter than a 4" 686, then remove even more material to accommodate larger chambers and bore.
I don't know the production numbers but I have seen regular 2007ish 22-4 Classics show up in the wild. Usually about $700. The TR's are the same gun with silly little TR emblems on the super skinny Altamont grips. No worth any premium over the regular 22-4 in my opinion.
Now when will this gun get offered in 45 Colt?