The inventory records for Radford Co. reflected the following Beginning inventory @ May 1 2,100 units @ $ 5.80 First purchase @ May 7 2,200 units @ $ 6.00 second purchase @ May 17 2,400 units @ $ 6.10 Third purchase @ May 23 2,000 units @ $ 6.20 Sales @ May 31 6,600 units @ $ 7.70 Determine the amount of ending inventory assuming the FIFO cost flow method.