What does it cost to have TV mounted? (Oxnard)

Hey, does anyone have an idea of what I should be expecting to pay to have my 65" TV professionally mounted to the wall? I have a 65", but no mount yet, and doubt I could do it myself.
I'm looking for some info on pricing so I don't get overcharged.
Have you had a TV mounted recently in Ventura county? What did it cost you? What kind of TV was it? Did they do anything extra like mount a sound bar? Thanks for the info!