I just bought this for 5 euros. Is there a new price increase on groceries at the beginning of each year?

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https://preview.redd.it/rvqdgodpsogg1.png?width=1200&format=png&auto=webp&s=6e1f9fe43f4f0b1c3761f7b01f416dd4fb65ff4d

Hi.

I arrived to Germany last October. I'm not sure if I kept correct track of this item's price but I don't recall it being 5 euros 2 or three months ago. Is that the normal price or is there a price increase at the beginning of the new year here?