Support long term

In pricing I read this

(For users on Pro or Business plans, your published apps will be unaffected if your account expires).

So there are plans that are available if you pay Thunkable for this right. On the pricing page there is no cost information on either pro or business plans.

refers to a Business and advanced plans that cost $2000 and $1200 yearly.

Since I’m just starting with Thunkable I just wanna know how much I would have to pay for the foreseeable future to keep my users app alive? Seems to me people would want to know.
Pat