Saddlery Company sells leather saddles and equipment for horse enthusiasts. Saddlery uses the perpetual inventory system. The following schedule relates to the company's inventory for the month of May: Cost Sales May 1 Beginning inventory 210 units $136,500 5 Sale 140 units $118,300 9 Purchase 70 units $50,050 13 Purchase 280 units $218,400 24 Sale 280 units $254,800 27 Sale 70 units $72,800 30 Purchase 105 units $90,090