To pay GST. Without prejudice to clause 6.6, you must pay, in addition to all other sums payable under this agreement, any goods and services tax (“GST”, which expression includes any tax of a similar nature that may be substituted for it or levied in addition to it by whatever name called) which may be imposed by law, in respect of any sums payable to or received or receivable by us or any expenses incurred by us in connection with this agreement (except to the extent prohibited by law); and we will debit the same to your card account.