the responsible minister claimed it's an immense task and will take til autumn. It will  only include 16 product categories (think flour, milk,etc.). And it will only be updated once a week.

I mean that's pretty pathetic. Better than nothing, but "only updated once a week" sounds like "the intern who has to enter the prices works only for 20 hours", not like they created an API and told the grocery chains to upload their prices.