I just shop in Aldi for 95% of stuff and go to asda for the odd bits I can't get in Aldi (like vanilla redbush)
I don't know what your budget is but ours is about half of feck all and we manage this way - primal crap is better than non-primal crap. Nuts and ground almonds are cheap from aldi for hazel nuts and walnuts and almonds, and cashews (though they are hidden with the snaking nuts, not with the cooking stuff?!?), other nuts can be got cheap from lidl, pecans and brazils, I think the do sunflower and pumpkin seeds too.
I've found a propper butcher for organs and bones (I cycled back home with a cow thigh bone in my rucksack last week, man that was heavy)
We don't bother with stuff like coconut flour etc, we mainly eat mince, chicken, eggs, some bacon for protien. and I mange organs once a week, but I'm on my own unless it's chicken livers then the kids will eat them. We eat whatever veggies aldi has in, then cream, full fat greek yogert and butter, EVOO. We do get cheese from the local co-op as the seem to consitantly have good strong cheddar on BOGOF at them moment, and always look for short date meat there too.
We spend between 60 - 90 quid a week of all shopping (including loo rolls, nappies etc) every week for 5 of us and I eat a lot.
You know all those pictures of Adam and Eve where they have belly button? Think about it..................... take as long as you need........................