A paid event is an event that has a cost attached to a user registration, i.e. someone can't enter the event without paying you something. A free event is an event that you set for free and are taking on the cost per user yourself.
All events on the free tier are public events i.e. they are published on our website and almost anyone can enter the event. A private or invite only event is one where you only can access the event if the host approves you and if you have a direct link to the event page.
Currently we use Stripe to process payments as a platform. This means you can only host if you have a bank account from any of the following: Australia,