I buy at least half our groceries in bulk. Pork, beef by the half. Chickens we raise and butcher 25 at a time. 5 gal coconut oil. 25 lb bags dry goods (popcorn, all kinds of beans, oats, lentils, quinoa, rice, pasta, sugar, salt) and some cold items (cheese, pickles, frozen fruit, butter). I use azure standard, country life natural foods. Tea, canned coconut milk from Amazon. Flats of canned pumpkin, tomatoes and beans from the local grocery store when on deep discount. Whole turkeys when on clearance after thanksgiving.
I cook for 6, soon to be 7, so we go through a lot of food. I have a chest freezer and two fridge/ freezers that are usually full.