Declares that the compensation may not be less than the rates reasonably charged by the dealer for like services and parts to retail customers of motor homes, as defined in RCW 46.04.305, campers, as defined in RCW 46.04.085, and travel trailers, as defined in RCW 46.04.623. The compensation may not be reduced by the manufacturer for any reason or made conditional on an activity outside the performance of warranty work.