[octosphere]

> Amazon has never done that

Well maybe they do? I know Amazon's algorithms are opaque to the user, but after several purchases on Amazon I noticed this trend of items I researched showing a small uptick in the price after a few days when I go to buy it. The price uptick is there for all users, but Amazon knows only one specific person will buy it, so the price is adjusted for that person and no-one else. After buying, the price goes back to its default in a few days.