20. (1) Unless ordered by a court or otherwise agreed between the parties, the parties shall—

(a) pay to the mediator the fees and costs agreed in the agreement to mediate, or

(b) share equally the fees and costs of the mediation.

(2) The fees and costs of a mediation shall be reasonable and proportionate to the importance and complexity of the issues at stake and to the amount of work carried out by the mediator.