I don't know what would be "reasonable" these days. I haven't seen one for a long time. IIRC I had an 82 way back in the 70's. Second handgun I ever bought. It was basically a copy of a Smith and Wesson Model 10, with a heavy barrel. It had Magna grips that I added a Tylers T-Grip to, and brother it was lights out with 148 grain wadcutters (about the cheapest ammo I could find back then when I was a youngster with a wife and a brand new kid. I THINK I paid either 79 or 99 dollars for that gun, new in the box. Of course the gun shop owner had to tell me it wasn't as nice as a Smith & Wesson. Welll Duhhhhhhhh No kidding? The Smith and Wesson was 20-40 bucks more. I forget which over the years, but it was a LOT of money to me back then.
I would think one would cost 300-450 dollars these days. That's a big range, but in this current market, who knows? I'd jump on one at the low end, and would probably pass on the high end of that. But then I don't really "need" one. It would sell quickly around here for either. Most anything 38 Special does.