Marin sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Marin's purchases of EZslide snowboards during September. During the same month, 105 EZslide snowboards were sold. Marin uses a periodic inventory system. Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 15 $ 106 $ 1,590 12 Purchase 45 108 4,860 19 Purchase 50 110 5,500 26 Purchase 20 111 2,220 Total 130 $ 14,170 Compute the ending inventory at September 30 using the FIFO, LIFO and average-cost methods. FIFO LIFO AVERAGE-COST Ending inventory at September 30 $ ta $