G P6-36. Inventory valuation L.O. 6-4) (Easy - 5 minutes) A specialized retailer has a selection of five products. The following is information relating to these products: Product # Units Cost per unit $ 40 150 200 100 300 200 Selling price $ 80 120 60 100 100 300 100 70 ne company estimates selling costs to be 10% of selling price, primarily for sales commissions. Required: Determine the amount of inventory writedown, if any