Do you mean that Amazon's price for a given product is higher for Prime customers?
Or do you mean the following? for a given product, some sellers are Prime-compatible and some aren't, and if you're a Prime customer the price they'll show you is for a Prime-compatible seller who may be more expensive.
Both of these mean that if you follow the path of least resistance you'll pay more as a Prime customer, but it feels like there's an important difference: in the latter case, but not the former, a Prime customer can get the same prices as the non-Prime customer without having to log out or otherwise try to make Amazon not know who they are.
(For the avoidance of doubt, I'm not claiming that you do mean the second of those things, or that they don't do the first of them. I wouldn't trust Amazon any further than I could throw Jeff Bezos, and I am 100% unsurprised if they offer different customers different prices for whatever scrutable or inscrutable reasons they might have.)
Or do you mean the following? for a given product, some sellers are Prime-compatible and some aren't, and if you're a Prime customer the price they'll show you is for a Prime-compatible seller who may be more expensive.
Both of these mean that if you follow the path of least resistance you'll pay more as a Prime customer, but it feels like there's an important difference: in the latter case, but not the former, a Prime customer can get the same prices as the non-Prime customer without having to log out or otherwise try to make Amazon not know who they are.
(For the avoidance of doubt, I'm not claiming that you do mean the second of those things, or that they don't do the first of them. I wouldn't trust Amazon any further than I could throw Jeff Bezos, and I am 100% unsurprised if they offer different customers different prices for whatever scrutable or inscrutable reasons they might have.)