I think Brazilians have been real sleepers until recently.
In terms of condition, you need to realize that many, but not all, are rusted and dinged up.
There were two major groups, pre-WWII (1937+) and post-WWII (1946). The pre-war guns saw overseas service in Italy with the concomitant wear and tear of extremely harsh war-time conditions. The post-war guns may not have been babied, but at least they only saw peace-time service in Brazil. Not to mention entering service a decade later.
I had a 1937 vintage Brazilian but traded it away. Probably should have kept it but oh well. Its condition was very poor. When I took the stocks off, I didn't see pits, I saw craters. I let it go because at the time I did not want a gun in that condition.
I have a couple of post-war Brazilians that are in very good to excellent condition. I have seen posts on this site disparaging this group as "put together from scrounged / found WWI parts." Maybe they are, but mine are excellent shooters and I am glad to have them. See picture below.
Functionally, I think the post-war Brazilians are on a par with any WWI M1917. Of course, they do not have the same collector interest. But they are an N-Frame that fires a .45 caliber cartridge and as such will easily bring $500 to $1,000 from shooting enthusiasts, depending on condition of course.