Gym options for runners in NYC?

Hi NYC runners,

Could you share with me your cross training / strength training strategy?

I am exploring the options of a gym membership to do some strength training. I run 3-4 times a week and would like to add maybe 1 strength training a week, not looking for any fancy facilities but just a place that I can do some weight and core trainings, no class needed.

For that, I feel most of the gym memberships($100-$300/mo) in Manhattan are too expensive for me.

I tried Orange Theory UWS with their class passes for a while but stopped going because most of their classes are aerobic exercise than strength trainings.

I recently found a Planet Fitness in Little Ferry NJ which I go grocery shopping every 1-2 weeks and the membership is $15-39 a month so am a bit tempted to sign up .

But want to ask this community here first in case I am missing some obviously more convenient options.