The service industry in America do like to gouge people to death….
Not surprised at all….
Find a trusted handyman by referral, not necessarily a licensed plumber or “contractor” who has a habit of ridiculous racking up the hourly rate….
The angle stops and shower valve are a breeze. The overflow plate probably is easy too.. The tub drain is a little tricky, but not necessarily if you have one of these.
Replacing 3 hangin light fixtures shouldn’t be that hard…
The possibly difficult thing might be the bathroom light/fan fixture…
For $800, I would be happy to do it for you if you were in S.D. And even then I think that’s overpriced. That would even be kinda excessive me thinks.