Amazon provided me extra discount on top of a discounted price. But only for selected products. It's easier and more manageable than my bank credit card reward

Amazon provided me extra discount on top of a discounted price. But only for selected products. It's easier and more manageable than my bank credit card rewards. Also many services like doctors, vets, etc are much easier to pay. The only upside of CCs are rewards and cashbacks, but if they add too much rules, and exceptions for it, pix becomes the clear winner for the transparency on my expenses. So even for people on middle to upper middle class it can have more benefits.