Inventory Costing Methods, Periodic Method The Shioh Company uses the periodic invertory system for its merchandise inventory. The June 1 inventory for one of the items in the merchandise inventory consisted of 60 units with a unit cost of $120. Transactions for this item during June were as follows: Jure Purchased its $130 per unit 13 Sold 50 units 5170 per un Purchased 10 units 5332 perunt 29 sold 20 units 5175 per unit