(1) The payee must inform the payer of any charge requested or reduction offered by the payee for the use of a particular payment instrument before the initiation of the payment transaction.
(2) The payment service provider, or any relevant other party involved in the transaction, must inform the payment service user of any charge requested by the payment service provider or other party, as the case may be, for the use of a particular payment instrument before the initiation of the payment transaction.
(3) A payer or payment service user is not obliged to pay a charge of the type referred to in paragraph (1) or (2) if the payer or payment service user was not informed of the full amount of the charge in accordance with the relevant paragraph.