I don't own a Rossi but have been fairly impressed with what I've seen when I've handled them. Pretty nicely done given the price.

New they are going for about $800 in the current market. And they are regularly available, so they aren't rare by any means. https://ammoandarmsstore.com/920441613/

In near new condition as you described, I'd probably offer $650. Much over that and I'd just buy a new one.

[Linked Image from i.imgur.com]
https://vcdl.org/