The mediation of consumer disputes referred to in 5° of Article L. 611-1 meets the following requirements:
1° It is easily accessible by electronic means or by ordinary mail to all parties, consumer or professional;
2° It is free of charge for the consumer with the exception of the costs set out in 3° and 4°;
3° The parties have the option, at their own expense, to be represented by a lawyer or to be assisted by any person of their choice at all stages of the mediation;
4° Each party may also request the opinion of an expert, the costs of which are at their own expense. In the event of a joint request for an expert opinion, the costs shall be shared by the parties.