Me too and it's tragic!
I know people who gig for about that price. Lots of them.
I'll do $50 + a meal for friends. Quite honestly, doing sound is the easy part. The hard part is dealing with the Rando's. Every time I do sound I have to:
Keep idiots from thinking my area is their own private box seating.
Defend the board and rack from people that think it's OK to set drinks on the desk.
Pretend to be some random woman's husband to ward off a creep.
Deal with the Karen's that take offense to something the band is doing.
Deal with venue customer service (tell customers where the restroom is, explain that I am not able to bring them a tab or serve them, etc).
Macguyver/Figure-out how to run 2000-watts of gear on a single 15AMP circuit that also hosts the ice machine.
Ward off distractions, like when "Mr. Gear" comes over and wants to have an in-depth conversation/debate about the virtues of the Fat Channel or some other piece of equipment that you really don't care about.
Loan out cables/picks/sticks/etc to musicians that forgot their shit.
Rebuke other bands that assumed that I was there to do sound for them as well.
agreed.......and there's the problem, a good sound guy who follows those rules won't do all that for $50 - $70 a gig unless they're stupid.