Sometimes you can justify the prices to people who would pay $30 per spin class and go to 10+ spin classes a month. They also tend to be located down town right next to big work hubs so they're easy to get to. Finally, they usually don't participate in the shady budget-gym "you can never cancel" dark patterns.
I'm in NYC and could never justify an Equinox membership, but $75-$125/mo is pretty standard if you want to join a gym with classes and not be tied to a single location.
I had a New York Sports Club membership with access to all NYC locations and classes for ~$75/mo after a discount offered by my company. Being able to go meet a friend for a class at their location or be able to pick a gym near home or work was convenient.
I’m referring to LifeTime but Equinox and others target this price point. It’s very successful in my high cost of living area, and they’ve been expanding quickly. I hope they survive Covid though I’ll admittedly have my membership on hold until a vaccine arrives.
Basically this is another thing to take into account when considering moving to SV, I suspect.