If the manufacturer was raising prices then yeah Carrefour would probably do that. But "shrinkflation" is when they reduce the package contents (eg 830 grams of

If the manufacturer was raising prices then yeah Carrefour would probably do that. But "shrinkflation" is when they reduce the package contents (eg 830 grams of baby formula instead of 900g) and keep the price the same. The supermarket can't change the package contents. I'm quite sure they change the labels where appropriate (prices often have $/liter or whatever) but people often don't pay attention to that stuff.