§ 188. Service charge based on quantity. No person shall impose a
service charge which is based upon quantity in excess of the actual
quantity of any commodity or article serviced. Nothing in this
provision, however, shall prohibit the person or persons rendering the
service from establishing a minimum charge therefor; such minimum charge
to apply to all quantities up to and including a fixed limit regardless
of the actual weight or measure of the commodity involved. In the event
of the establishment of a minimum charge, the dispenser of the service
shall inform the person receiving the service, by advertisement or
otherwise, of the terms of such minimum charge.