I guess he felt he deserved only the best at a five finger discount. Sad to see how crappy people can be.
I've had people ask to buy some before, they get told no, but I'm open to trades, worked out well a few times.
The best one is some stranger at the range wanting to try out my gun. Worst instance was a guy wanting to try my eagle, he had a sr1911, said I'll trade you round for round, he said "nobody but me shoots my $&@#," in a real snobby tone. I said "well, 44's ain't free and I'm not a charitable person, so take your mooching @#$ back over there." Either he had a cooler head or the veins starting to pop out of my neck done it, but he clammed up and went back to his table. That was several years ago.
Had times where kids ask, as long as the parent is ok, they can try a 22. Several safety lessons were taught during those times as well.