Praise be to Allah, the Lord of the Worlds; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions.
It is not allowed to work with this company in order to gain profits by advertising the EPM. The reason is that most of those who deal with this company do not need the equipment, rather they want to gain profits by increasing the number of customers. Sometimes they might find customers and get the similar amount they have spent or more, or they may not find the amount they have spent. This is a kind of gambling. Such transactions are based on risk and luck where one may get profit or loss; the goods that are used only as means does not have any weight in the transactions. The evidence for what we cited is that if the company does not pay the amount as mentioned in your question, people rarely would purchase it in the given price. However, if one is in real need of such equipment it is permissible for him to purchase it without having enrolled in that policy.Enrolling in that scheme, bringing customers and advertising it is cooperation with it, which is forbidden. Allah says: "Do not help one another in sin and transgression." (Al-Ma'idah 5:2)
This transaction does not include Riba but it is gambling as mentioned.
Allah knows best.