No owner of an interest in a vacation timesharing unit as such term is defined in Section 27-32-10(10) may be charged an up-front appraisal fee for the resale of his ownership interest but instead may only be charged an up-front marketing fee or commission upon the resale of the unit in an amount stipulated by written agreement between the owner and his sales agent.

Any person violating the provisions of this section is deemed to have committed an unfair trade practice under Section 39-5-20 and is subject to all penalties and remedies provided by law for this violation.