>>21491242£6/kg ain't too bad, izzit? Here in Lardmerica, it's $3/lb IE £5/kg. Meanwhile, not a single cut of beef is currently below $3.49/lb and that's for mince; proper steak? Well, I saw strip steak the other day for $15/lb but that was at an expensive supermarket my family and I only shop at because we game their discounts and points system. It wasn't on offer/sale, either, and looking at that store advertisements for last week and this, they don't even have a single beef item on sale besides mince. Checking the advertisement for a different supermarket, though, flat iron steak is $7/lb and hanger steak is $10 while both strip and skirt are $9.
Still, I can get bones even cheaper from the actual butcher, $2/lb or so, and in greater variety. I usual get beef knees and have them quarter them with the bone saw.