If you are running a paid event, TicketGateway Payment Processing is the standard method for accepting payments online. You can change your payment processor up until you sell your first ticket, and you can change who pays the fees (you or your attendees) at any point.
With TicketGateway Payment Processing, organizers can accept online payment from most major credit and debit cards.
Also, while TicketGateway Payment Processing is the default option (and in most cases the most cost efficient and smoothest experience), you can also use: