400 units at $7 300 units at $8 At May 1, 2013, Kibbee Company had beginning inventory consisting of 100 units with a unit cost of $7. During May, the company purchased inventory as follows: The company sold 500 units during the month for $12 per unit. Kibbee uses the average cost method. The value of Kibbee's inventory at May 31, 2013 is $1,500.00. $2,212.50. $2,250.00. $3,750.00.