Exercise 6-20B Estimating ending inventory-retail method P4 Dakota Company had net sales (at retail) of $260,000. The following additional information is available from its records. Use the retail inventory method to estimate Dakota's year-end inventory at cost. Beginning inventory... Cost of goods purchased.. At Cost At Retail $ 63,800 $128,400 115,060 196,800 Check End. inventory at cost, $35,860