This returns a value of 3.4 units per replenishment cycle. now suppose the expected cost of a unit out of stock is $10 per unit out of stock .Then every time we place an order our expected cost of lost sales is about is about $34. This is an additional ordering-related cost. suppose you only use truckload" for transportation and that each truckload costs $150. other ordering related costs are $20, including accounts payable variable costs, receiving, and so on. Then the total cost associated with placing an order is $150+$34+$20=$204 par order