In its first month of operations, Crane Company made three purchases of merchandise in the following sequence: (1) 380 units at $7, (2) 480 units at $9, and (3) 580 units at $10. Calculate average unit cost. (Round answer to 3 decimal places, e.g. 5.125.) Average unit cost In its first month of operations, Crane Company made three purchases of merchandise in the following sequence: (1) 380 units at $7, (2) 480 units at $9, and (3) 580 units at $10. Compute the cost of the ending inventory under the average-cost method, assuming there are 280 units on hand at the end of the period.