Humble Bundle started offering 'Pay with Amazon' a couple of years ago and it is very slowly expanding, in the UK at least. I looked into it last year and from

Humble Bundle started offering 'Pay with Amazon' a couple of years ago and it is very slowly expanding, in the UK at least. I looked into it last year and from the merchant perspective you have to try do the maths up front. There is a trade-off between micropayments and 'standard' amounts, with the fee and per centage varying. There are discounts for higher volumes but not automatically applied. All in all it reminded me of trying to calculate AWS bills up-front; not trivial and prone to assumptions. I'd say it targets an interesting niche the folk whom I know use it prefer Amazon's name to Paypal, and they are mostly higher-than-average salaried. I wonder what the comparison with other payment methods' demographics is?