also there is no google analytics, fb pixel, cookies etc.
just a clean, fast site that updates its pages every day from official sources.
same with groceries where statistical bureaues usually report some average prices nobody use to buy things for, when everyone buys all groceries in promotion and price in promotion vs regular price can be very different thing in different countries, so countries which have smaller difference between regular and promo price will appear cheaper, while countries where promo prices are much lower than regular prices will appear more expensive
big mac price you show in Czechia in local currency 115 CZK, while the real price is 125 CZK, I checked both restaurants nearby my house
thanks for the feedback