Rather than being smug, pompous, and having nothing useful to say, you could provide a recent source.
What I did find on Google is several years old, and I can't replicate the pricing changes even with a VPN, different OS, different hardware, and different account. Even asked friends and family to tell me what prices they see.
Yep. Sorry. It did feel like you were asking for evidence for (what I believe) is received wisdom, which is a standard tactic for trolling. If you really have not had that experience, I am truly sorry .. and envious.
Browse without login from another device+ip. Back in the day it was subtle and you'd have to browse some category of shit for a while before the prices were inflated for your account.
By "back in the day" I mean 10+ years ago, and you'd have to browse for a few days.
I am not sure why I am being downvoted for something that I and others have observed; must be the Amazon fanboys having a hard time acknowledging they work for a shitty company. Other companies have done this for years too, like airlines. It's also not like you need to search very hard to see all the lawsuits Amazon is involved in, but here is one link describing price changes (which occur due to many things, of course, not just user profiling):
