Subjoin has 5% fee, with no subscription cost (https://ghost.org/pricing/). And you have to upgrade with X amount of members.

It does look nice, though! It seems Ghost is an all-in-one paid community platform. Something that has all kinds of bells and whistles you pay for.

It's in a similar niche, but Subjoin has a slightly different direction.

I will be having my next set of updates in coming weeks :)