3.08.01. A technologist must charge fair and reasonable fees. Fees are fair and reasonable if they are warranted by the circumstances and in proportion to the services rendered. A technologist must take the following specific factors into account when determining his fees:(a) the time spent in carrying out the professional service;
(b) the complexity and extent of the service;
(c) the performance of unusual services or services requiring exceptional competence or celerity;
(d) the cost of the materials used and the extent of the means necessary to the provision of a specific professional service.