Business is essentially a calculation. Based on the calculations that integrate with external and internal factors, people can stand on a giant shoulder and evaluate the current status and predict a more precise future. It’s not 100% correct, as the change is beyond the plan. However, it ensures you are indeed on the way to the goal instead of going the wrong way. The goal here is profitable whatever strategies you are implementing. And in the eCommerce space, SKU profit margin calculation is applicable as well.