Any invoice, billing or other document given to a purchaser that indicates the sales price for which tangible personal property is sold:
1. May state separately any amount received by the seller for any transportation, shipping or postage charges for the delivery of the property to a location designated by the purchaser; and
2. Must state separately any amount received by the seller for:
(a) Any installation charges for the property;
(b) Any credit for any trade-in which is specifically exempted from the sales price of the property pursuant to chapter 372 or 374 of NRS;
(c) Any interest, financing and carrying charges from credit extended on the sale; and
(d) Any taxes legally imposed directly on the consumer.