Sure but multiplying by ten to get the price per kilo shouldn't be the most complicated thing for even those folks that aren't math savy. It means to move the decimal point (or comma) one place to the right IIRC.

If you had to convert from arms to legs or feet like in certain areas of the world, that might be much harder, of course.

I prefer prices per 100g because I mostly buy food that's under one kilo. I'm sure they show prices per 100g just to make them look cheaper but in my case I actually prefer it this way.

Whilst I am waiting for my number in a chemist, I kill time by finding the highest price per litre. It's normally some anti-aging cream at well over €1000 / l.

This is not just EU, in our here Middle Eastern country there's the same law. (And also mandatory "high sugar" warning stickers on unhealthy stuff.)

Customer-friendly regulation sure feels nice.

The same with this "metric system"

> and annoys global companies

Lol... Meta is doing a huge campaign here in Brazil about how they won't provide us their AI services because they are annoyed by that entity.

It has been quite a help to the government popularity.