(1) Discounts allowed and taken on sales , including automobile manufacturers' rebates when those rebates are assigned by the purchaser to the retailer;

(2) Allowances in cash or by credit made upon the return of merchandise pursuant to warranty;

(3) The price of property returned by customers, when the full price is refunded either in cash or by credit;

(4) The price received for labor or services used in installing or applying or repairing the property sold, if separately charged or stated;

(5) Any amount charged or collected, in lieu of a gratuity or tip, as a specifically stated service charge, when that amount is to be disbursed by a hotel, restaurant or other eating establishment to its employees as wages;

(6) The amount of any tax imposed by the United States on or with respect to retail sales, whether imposed upon the retailer or the consumer, except any manufacturers', importers', alcohol or tobacco excise tax;

(7) The cost of transportation from the retailer's place of business or other point from which shipment is made directly to the purchaser, provided that those charges are separately stated and the transportation occurs by means of common carrier, contract carrier or the United States mail;

(8) The fee imposed by Title 10, section 1169, subsection 11;

(9) The fee imposed by section 4832, subsection 1;

(10) The lead-acid battery deposit imposed by Title 38, section 1604, subsection 2-B;

(11) Any amount charged or collected by a person engaged in the rental of living quarters as a forfeited room deposit or cancellation fee if the prospective occupant of the living quarters cancels the reservation on or before the scheduled date of arrival;

(12) The premium imposed on bulk motor vehicle oil  and prepackaged motor vehicle oil by Title 10, section 1020, subsection 6-A; or

(13) Any amount charged for the disposal of used tires.