Keep in mind, this is already an Amazon customer. They almost certainly already shop Amazon first.
This is a given before you even start.
If you are using this, it's either because you are selling things Amazon doesn't sell (and despite how large they are, there's a ton of stuff like that). Or you have some kind of advantage over Amazon that they can not match.
If all you are doing is matching, or slightly beating Amazon, you already lost before you even implemented Amazon Pay.
That is terribly kind to Amazon, I'd hold off on presuming every customer, or even a majority of customers always check Amazon first when going to buy items. If that were the case, Amazon would be much much bigger.
Keep in mind, this is already an Amazon customer. They almost certainly already shop Amazon first.
This is a given before you even start.
If you are using this, it's either because you are selling things Amazon doesn't sell (and despite how large they are, there's a ton of stuff like that). Or you have some kind of advantage over Amazon that they can not match.
If all you are doing is matching, or slightly beating Amazon, you already lost before you even implemented Amazon Pay.