Am I the only one who thinks $84 for a round of drinks for 7 people isn't unreasonable? I say you're lucky you got it for under a hundred.
Los Angeles doesn't seem like it would be that much more expensive than NYC, but here a drink can go anywhere from $7-15 unless you're just ordering soda. Even bottled water is up to like $6 in some places.
I went to bartending school before I was in the biz, it's harder than you think. Making different drinks for a party of 7 or even opening up 7 different beers is very tipworthy.
"just sayin"