If I did not care about the martial art one way or another and just looked at the services provided. And then looked at a decent MMA gym. I would get more bang for buck generally.
Lets look at courage in Townsville.
Boxing Townsville | Martial Arts | Courage Training Centre
Now I can learn 4 different systems and fitness instruction,weight loss, nutrition. From legitimate ranked instructors. Plus seminars. Plus social events.
(They did a high fall stunt course)
I can train every day.
I have access to competitions in different disciplines depending on what would suit me.
And these styles transport. So if I go to another gym. I walk in there at the level I left the old one.
And better equipment. And self defence.
As oposed to one style by one guy who may be three times a week that once I leave. Nobody cares about. I cant walk my karate black belt in to Barrys karate advanced class as easily. My BJJ black belt is a black belt in every style of BJJ.
So I would have to be invested in learning a style specifically because I wanted to learn it. Rather than just learning martial arts.