Amazon Prime Days ran on July 16th and 17th (at least here, in Canada).
This price jump happened a day before and ended two days later, but this item was “on sale” during those two Prime Days.
I’ve been seeing this scam far too often, especially with food items. Why isn’t this illegal yet?
In the last 5 years, Amazon (for me) has had lower food prices than nearly all local grocery stores for certain items. The "trick’ is to park those items in a wishlist and set a notification for when the price drops to a level you are willing to pay (via browser add-on), then you can really save a lot.
But for most items, it’s a gamble to assume you are getting the lowest price, even when they are on sale. But then again, I think most stores play the same games, so consumers are always on the losing end no matter where they shop.