; or (II) the lowest available price of such reservation as fulfilled had such reservation as fulfilled been made on the date of fulfillment. (3) An amount equal to 200 percent of the total rental price of the reservation of the consumer, except that in no case may the amount exceed $500 per day of the reservation. (b) Regulations The Commission may promulgate, under section 553 of title 5, United States Code, regulations to implement this section. (c) Enforcement by Commission (1) Unfair or deceptive acts or practices A violation of this section or a regulation promulgated under this section shall be treated as a violation of a regulation under section 18(a)(1)(B) of the Federal Trade Commission Act ( 15 U.S.C. 57a(a)(1)(B) ) regarding unfair or deceptive acts or practices. (2) Powers of Commission The Commission shall enforce this section and the regulations promulgated under this section in the same manner, by the same means, and with the same jurisdiction, powers, and duties as though all applicable terms and provisions of the Federal Trade Commission Act ( 15 U.S.C. 41 et seq. ) were incorporated into and made a part of this Act. Any person who violates this section or a regulation promulgated under this section shall be subject to the penalties and entitled to the privileges and immunities provided in the Federal Trade Commission Act. (3) Effect on other laws Nothing in this Act may be construed to limit the authority of the Commission under any other provision of law. (d) Actions by States (1) In general In any case in which the attorney general of a State, or an official or agency of a State, has reason to believe that an interest of the residents of such State has been or is threatened or adversely affected by an act or practice in violation of this section or a regulation promulgated under this section, the State, as parens patriae, may bring a civil action on behalf of the residents of the State in an appropriate district court of the United States to— (A) enjoin such act or practice