If you buy a lot of food then you should use gourmet food suppliers who sell at wholesale prices. And it does not only have to be gourmet foods that you buy, you can buy any kind of foods from wholesale food suppliers.
Supermarkets and delicatessens buy from wholesale food suppliers. They may have one huge wholesale food supplier or they may have many wholesale food suppliers, depending on what they want to put on their shelves. They get fantastic bulk prices from these wholesale food suppliers, as well as good terms and conditions and excellent delivery and service. You, as a consumer, have choices over where to shop. You can go to the supermarkets or delicatessen, or to the corner store if that is convenient for you. At the supermarket, you get good wholesale prices, because of their bulk buys and their access to daily specials and discounts. At delis, you can get great prices too, as well as gourmet foods. Corner stores might be more expensive but are for sure easy. And then, you can go directly to the wholesalers too.
Direct shopping with the food wholesalers
Remember that any wholesale food suppliers are going to give the very best wholesale prices to their huge customers, which would be the supermarkets. You can choose to go to these supermarkets where you too will get excellent prices, but if you want to shop directly, and if your orders are decently sized, of course, you too can shop with the food wholesalers. You are unlikely to get the same discount prices that they give to the supermarkets but you will still get decent prices. And you will get food delivered by gourmet food suppliers to your doorstep, in bulk, and can keep your pantry and freezer and fridge well stocked.