f. any fees or charges of the Centre for administering the arbitration or providing services to the arbitral tribunal or the parties in connection with the arbitral proceedings.

2.             The arbitral tribunal shall fix the costs of arbitration in its final arbitral award.

3.      The fees of the arbitral tribunal shall be reasonable in amount, taking into account the amount in dispute, the complexity of the subject matter, the time spent by the arbitrator(s), and any other relevant circumstances.

Article 38

Apportionment of costs

1.             Subject to (2), the costs of arbitration shall be borne by the unsuccessful party unless the arbitral tribunal determines that it is appropriate, taking into account the circumstances of the case, to apportion the costs between the parties.

2.      The arbitral tribunal shall determine which party shall bear the costs referred to in Article 37(1)(e) taking into account the circumstances of the case and may apportion those costs between the parties if it is reasonable to do so.