Suppose that Reebok's inventory records show the following data for the month of September: Units Unit Cost Inventory, September 1 90 $2.90 Purchases: September 8 440 3.60 September 18 310 3.90 A physical inventory on September 30 shows 140 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 $