You don't need to do high end.
KETO and Carnivore work with any budget.
I do Carnivore and buy reduced meats. I try to keep it at 4 dollars per pound or less. Once in a while I will splurge at $5 a lb.
Butter, check sales. Right now it is 4.00 a lb.
You can whine, or go to work and check different stores every week for the best prices.