Hess Company's inventory records show the following data for the month of September: Units Unit Cost Inventory, September 1 100 $3.00 Purchases: September 8 450 3.50 September 18 300 3.70 A physical inventory on September 30 shows 150 units on hand. Calculate the value of ending inventory and cost of goods sold if the company uses LIFO inventory costing and a periodic inventory system. Ending inventory $ Cost of goods sold $