Reward from each purchase
You get reward every time when user you’ve attracted makes purchases with ePN Cashback.
In the long term such model would bring in times more income from one user than model with one-time payment for registration.
Moreover, right after the first purchase the amount of your reward can exceed the highest reward for registration.
For example, new user use promo code for 10,5% cashback and buys smartphone for 175$. In this case the amount of your reward would be 3.67$ (more than 220 rubles). It’s already more than highest fixed rate - 200 rubles. And also user would continue to buy with cashback and to bring you profit.