500g Country life in Tesco is only £2, only 50% butter though. https://www.tesco.com/groceries/en-GB/products/253002927
Tesco own brand is £2.20 and higher butter content.
Agreed: at under £2 all the time the Norpak is the same as Lurpak (unlike many supermarket own brand ones). The key is to look at the butter % on the ingredients. Some people just have to have a 'brand'.
I used to Know a working girl at university that was called Lurpak
Managed to get this for £1.95 at my Sainsbury’s local so may be worth checking there if passing.