Applying the Cost of Goods Sold Model The following amounts were obtained from Stanwick Company's accounting records. 2019 2020 Net sales $388,600 $427,460 Cost of goods sold: Beginning inventory $36,800 (d) Purchases (a) 296,700 Goods available for sale (b) (e) Ending inventory 42,060 (f) Cost of goods sold (c) 295,390 Gross margin $117,960 (g)