Being able to afford it and thinking it’s worth it are two completely different things.
If a cost is involved, I have to make the determination if I personally think the cost justifies the activity for myself. $15 vs $30 is a big difference when determining whether or not to participate. There are tons of DMS classes I’ve chosen not to sign up for because the cost was personally more than I wanted to pay for that activity. Doesn’t mean it isn’t worth it for other people. It’s basic Economics 101!