How do I calculate cost per order for my e-commerce business?

CPO refers to the collective cost an e-commerce requires to provide goods or services to buyers. As for its calculation, you will have to add your shipping, marketing, and fulfillment costs of a distinct span and divide it over the orders you received in that specific time. Mathematically it can be represented as:

CPO = Costs of shipment x Fulfillment and marketing / Number of orders in the specific time