For purposes of subdivision (4), delivery charges are charges by the seller for preparation and delivery of the property to a location designated by the purchaser of property, including but not limited to transportation, shipping, postage charges that are not separately stated on the invoice, bill of sale, or similar document, handling, crating, and packing. Delivery charges do not include postage charges that are separately stated on the invoice, bill of sale, or similar document.
IC 6-2.5-1-5