Notwithstanding Section 53088.2, a delinquency fee charged in a cable television transaction which is not in excess of four dollars and seventy-five cents ($4.75) and which is imposed in accordance with the procedures set forth in Section 53088.6 shall be valid. The delinquency fee may not exceed four dollars and seventy-five cents ($4.75), unless the Federal Communications Commission expressly requires late fees to be fully included when setting benchmark rates applicable to a cable television operator. If this requirement is imposed by the Federal Communications Commission, then the maximum delinquency fee charged by the cable television provider shall be 11/2percent of the delinquent amount in the relevant franchise areas for as long as late fees are fully included in benchmark rates.