I did a double-take at the 3.5k Euro spend per year on clothing. My own spending is probably 2-3 orders of magnitude smaller. But then I saw how many shoes they own, and the fact that they have a summer house where at least one pair resides. This person lives differently to me.
There are 7 billion people in the world. Some of them are in severe poverty, some of them are US decamillionaires and above, if you choose say, five of them at random then the likelihood that they all have "about as much as you" is really quite low.
Even locally, I can walk down my street and easily tell that some families have 5 million net worth and others near to zero.
To some people it's ridiculous to spend more than 30 quid on a backpack, to others it's ridiculous to buy a cheap one when you're going to be putting a 2 grand laptop into it.