During Early Access, apparently everyone gets access to everything. Once the actual release comes, there’ll be a free tier but everyone who bought an early access copy will get a free month of… gold? Or something. Basically, for now Tabletopia is apparently set up so that if you buy into the beta, the early access fee counts as your “subscription” until it gets officially released. I think.
EDIT: that thing Zejety said. In my defense, I’m drunk