3.08.02. The fees are fair and reasonable if they are warranted by the circumstances and correspond to the services rendered. In determining his fees, a member must in particular take the following factors into account:(a) his experience;
(b) the time devoted to the carrying out of his professional service;
(c) the complexity and importance of the service;
(d) the responsibility assumed;
(e) the performance of unusual services or of services requiring exceptional competence or celerity.