Calculation of Cost of Goods Sold: Periodic Inventory System with Sales Returns and Allowances The following amounts are known for Adams Gift Shop: Beginning merchandise inventory $27,000 Ending merchandise inventory 22,000 Purchases 78,000 Purchases returns and allowances 3,900 Purchases discounts 6,000 Freight-in 350 Assume the business makes estimates for sales returns and allowances at year-end. The balances for estimated returns inventory are shown. Beginning estimated returns inventory $2,000 Ending estimated returns inventory 1,600 Prepare the cost of goods sold section of the income statement.