Now many shops use cashback to attract the buyers. I think that cashback service will be popular and will attract a lot of users to the platform.
That's the way of trading from the first place in my opinion because it gives different discounts every day or every week. It depends on how you make an interest in your customers.
Cash back and different bonuses attracts a lot of users. It is good that thanks cash back it will be possible to earn extra money.