An optional contribution to Zeffy of 17% of the total ticket cost is automatically added at checkout. If you wish to opt out or change the amount, please ensure to do so before making payment.   

Requests for refunds for any optional contributions is only repayable upon request to Zeffy within 45 days of the payment being made.

See full details of Zeffy's T&Cs here: https://support.zeffy.com/terms-of-use-for-users