Blue Book, 37th Ed., shows a 98% '97 trench gun with military markings, boyonet lug, vent handguard at $9,500.
I doubt there are many in that condition. Even 60% is $2,500.
So, you see why I made my earlier statement about a real '97 riot gun being too expensive to beat up shooting CAS. And, CAS guns generally take a beating.
Now, one without all the military parts and markings won't be worth that. But in good shspe, maybe still too pricey for CAS.
I picked up a late '30's vintage '97 in good shape. It had already been cut to 24". I had it fitted for chokes and used it in CAS. It already was pretty slick. Seems I have around $600 in it. To me, it's worth that.
Remember, the '97's nickname, "The Widowmaker", didn't happen in a vacuum. It can be a dangerous shotgun to those not familiar with it. It's a great shotgun to those who understand it and handle it accordingly.