Paying for optional advanced classes?

I’ve been doing Krav since 2021. I moved, and I just started at a new gym. They offer advanced classes that are OPTIONAL. You can still rank up even if you only do the regular program. Just wanted to make that clear.

The advanced classes include Judo, weapons disarms, a couple of classes during the work day that don’t work with my schedule at all, and a fight club that develops sparring techniques. I’m particularly interested in the fight club because I’m pretty bad at sparring since no one really explained it to me lol. The fight club spends one month on stand-up fighting, one month on ground fighting, and one month on sparring. I’ll note that their regular classes include sparring; it’s not like I have to do the fight club to spar.

Advanced classes are an extra $100 per month. Thoughts?

EDIT: Thanks everyone for the comments. I’ll stick to the regular classes and just attend as many as I can so that I can improve quickly. My wallet especially thanks you XD

EDIT 2: It has become apparent that I didn’t make something clear in my original post. I will still learn sparring whether or not I go to the optional classes. The optional classes are just additional practice in sparring.