My girl was looking for a dress for Halloween. Yesterday she found one on Amazon for € 35 and put it in the cart, but did not buy it. Today she looked it up again and it was € 50 so she asked me to look it up with my phone with my Amazon account - it turned out to be € 23 for me, less than half of what it’s for her!
I do get different prices I have noticed from shared links but I also don’t have a prime account. The weirder part being that a lot of the time my prices seem lower without the account.