About 50% of total product costs are marketing costs. There are eight universal marketing functions: 1) buying products in sufficient quantities, 2) selling using advertising, personal selling and sales promotion, 3) transporting products from production to customer locations, 4) warehousing products until needed for sale, 5) standardizing and grading to ensure quality and quantity controls, 6) providing financing for channel members and consumers, 7) taking risks associated with uncertain future customer purchases, and 8) securing information about consumers, competitors and channel members to inform marketing decisions.