Germany is a big user of the trick "lemme change the unit from €/kg to €/100g in this part of the shop", for example at the cheese counter, which is what the pa

Germany is a big user of the trick "lemme change the unit from €/kg to €/100g in this part of the shop", for example at the cheese counter, which is what the parent is saying. It was the same trick used in the UK. I believe it comes from a european rules which allows such labeling if the packaging is small. In France it is always labelled in €/kg or €/L consistently through the shop.