How do you know if your facility is making money on group X classe

We offer our memberships gym/classes or just gym alone, so members can do both or just use the gym. The majority of members that utilize the “with classes” membership mostly just take classes. Basically it’s the same as what you are used to clubs charging. We used to have the one rate like your used to hearing of but members would complain that they didn’t want classes & why should we have to pay the same rate so we increased the rate on people that take classes. Hope that makes sense.

Honestly I just wanted to compare how I charge for my classes to what other club owners do.