Assuming there are 200 units on hand, compute the cost of the ending inventory under the average-cost method. (Round answer to 0 decimal places, e.g. 1,250.) The cost of the ending inventory In its first month of operations, Cullumber Company made three purchases of merchandise in the following sequence: (1) 100 units at \$5, (2) 400 units at $6, and (3) 100 units at $7. (a1) Calculate the weighted-average unit cost. (Round answer to 3 decimal places, e.g. 15.225.)