What is the ruling on working in brokerage or e-marketing for services that include a monthly or annual subscription with varying degrees, and obtaining a known and specified percentage of the buyer's recurring payments, with the percentage transferring to the new amount paid if the buyer changes the membership degree?

It is not permissible to work as a marketer if the marketing requires payment of money as subscription or training fees, because it is a form of prohibited maysir (definition) (gambling/speculation). Similarly, marketing is only permissible for lawful matters, and it is forbidden to market for a prohibited transaction, such as marketing discount cards for which a subscriber pays money to obtain discounts. This is because they are a form of prohibited maysir, and fatwas have been issued declaring them unlawful. If the service involves the client subscribing with a sum of money in exchange for discounts, it is a prohibited transaction, and it is forbidden to act as an intermediary for it or to assist in dealing with it.