Which products change the price they show you

2 of the 25-day tracked set served more than one entry price during the observation window, returning to figures they had already left. A page loaded once cannot reveal this — the number looks fixed. These were caught by loading the same page every day and keeping both answers.

A switch is a day where the entry price differed from the day before. Causes we cannot distinguish from the outside include deliberate A/B tests, regional pricing, and staged rollouts — so this page reports what was served, not why.