For a short while I costed it up, just to see. It was something like £600 per month using Lidl and special bits from Sainsbury's.
Versus £750 just using the big supermarkets.
I'd rather spend the £1,800 annually on nice things. And Aldi/Lidl food's really nice.
The savings from using Lidl or Aldi are still huge imho. I got lazy during the pandemic and used the likes of Sainsbury's, when our spend was £ 3-figures more per month than now.
We do still buy a few fussy things from the others.