Exercise 9-2 Lower of cost or net realizable value [LO9-1] The inventory of Royal Decking consisted of five products. Information about the December 31, 2018, inventory is as follows: Per Unit Product CostSelling Price $40 s 60 100 80 130 30 80 40 100 20 B. Costs to sell consist of a sales commission equal to 10% of selling price and shipping costs equal to 5% of cost