assuming a "normal" car.
front or rear brakes should be between 200-250 including machine rotors. air filter...why do you need it changed, are they saying its bad? have them show it to you or just hold off.
fluids...sometimes they have to get changed i guess. brake fluid flush is what, 120 or so? tranmission fluid around the same sometimes if they do it they can fuck it up
I'm not one to talk, I just blew $780 on my car last week replacing 6 cylinder coils and plugs, was getting misfires and they couldn't figure out which ones were bad (no CEL). hopefully that's it for a while. I hate car maintenance, next time getting a honda civic.