How to effectively reverse the retention cost of information flow?

Reverse cpa of conventional conversion rate. For the second-class e-commerce front-end, push back according to your target roi, that is, push back with per capita purchase volume, conversion rate, the ratio of customer unit price to selling price, roi. Simply put, it can be revenue /roi= cost. The cost/quantity of acquiring customers is equal to the customer unit price. This calculation does not consider other costs except promotion expenses. You can also choose third-party tools to help optimize the work, such as the marketing promotion system of Jiuzhilan, which can effectively improve ROI.