Yeah, but he isn't selling to just experienced vapers.
Years ago, my family started requiring riding and horsemanship lessons before we'd sell a horse to people that were new to horses. Not so much for the safety aspect, but for our own reputations. New people screwed up and blamed the horse and in turn blamed us for selling a bad horse.
Go back and read the "Dude blew his face off" threads. Lots of folks, some posting in this thread, blamed the shop that sold the mechs.
I wouldn't care if someone blew their face off being dumb. I don't care if someone gets hurt while riding a horse I sold by being dumb. But, if I want to keep my reputation as a good person to buy a good horse, I can't have people yapping that I sold them shit, even if it's not true. Reputation is everything and I have turned down good money to keep a reputation. I would also be selective about who I sold mechs and RDA/RTA's to.
I agree with the OP in his position. Building
IS dangerous. If I get someone that wants to buy the beautiful spirited gelding(RDA) in the pasture and after some talking find they are not equipped to handle him, I'll offer them the old layed back ugly mare(Nautilus) that doesn't have the energy to cause them any problems. And some horsemanship lessons so they don't screw her up.
It's a bit different than selling a tool IMO. The vaping industry has not had the years of adding safety guards and what not that tool manufactuerers have after being sued over and over. Table saws with sensors and shit to shut the blade down.
Chainsaws with kickback guards that stop the blade. You get the idea. Shit that I have to take off to use the damn things, lol.