A company uses the retail method to estimate inventories. The following information is for the first six months of the current year: beginning inventory at cost and retail were $70,000 and $100,000 respectively, net purchases at cost and retail were $270,000 and $360,000, respectively, and sales during the first six months totaled $320,000. What is the estimated cost of goods sold at the end of the six-month period using the LIFO retail method?