REWE seems like the only publicly listed grocery retailer in Austria:

https://en.wikipedia.org/wiki/REWE_Group

2022 numbers:

https://www.rewe-group.com/en/press-and-media/newsroom/press...

> combined net profit fell by 33.4 per cent, from 755.6 million euros to 503.5 million euros.

> Total revenue up 10.4 per cent, or 8 billion euros, to 84.8 billion euros

So 2022 profit margin of 0.5B/84.8B = 0.5%.

2021 profit margin was 0.75B/76.5B = 1%

That is spectacularly low, even Walmart manages > 1%.

Everyone else seems private so their financials are probably not available:

https://en.wikipedia.org/wiki/List_of_supermarket_chains_in_...