We have a couple barber shops around me that have been in business since the 60s/70s and they do it. One guy has a little shop, 3 chairs, opens when he wants, closes when he wants. People will literally wait hours to see him.
Ive gotten the shave a couple times (YEARS apart). My skin doesnt react to it well. But its so great I will try and get one every 5 years or so just to see if my skin changed and can handle it. If it ever did, I would would get one with every haircut and probably an extra one in between each haircut.