I write up what I measure while building data Actors on Apify, with the numbers and the method. Three of the 14 so far: - Night power is not the cheapest: on 29 days out of 31, France's cheapest 3 hours of electricity started between 10:00 and 16:00 - F and G rated homes sold 16% cheaper per m2: 2,518 French apartment sales matched to their energy certificates - Same used iPhone, 62% price gap across 18 European countries All of them: https://euroscrape.github.io/apify-actors/articles/ (disclosure: each article uses one of my own Actors)