Here are Plugins & Snippets collection of downloads related to Customer Acquisition Costs. Please have a look if there's any download that could be of help to improve and enhance your Easy Digital Downloads WordPress webstores.
Customer Acquisition Costs (CAC): We know to check the costs of our latest paid ad marketing campaign and recalculate how these costs relate with respect to the number of new paying customers obtained through these campaigns. Basically, the CAC can be calculated by simply dividing all the paid ad costs spent on acquiring more customers by the number of customers acquired in the period the money was spent on paid ads.

Source: How to Build a Digital Product Marketplace in WordPress - Plugins & Snippets