There is an Amish owned "salvage" grocery store that I go to once a month. You can go with a list, but you won't find all of it there...it is more that you buy what they have, that you may happen to need. And there's no predicting what they'll have, it is just whatever they can get a good deal on. Some of it is overstock/overruns, some of it is nearing the end of its shelf life, some of it is new products that flopped, some of it looks like it was loaded on a semi truck that wrecked out on the interstate and laid over on its side... LOL. But much of it is product with no issues.
They also buy a lot of top quality restaurant supply food in huge quantities, and then repackage it (using thick vacuum sealed packages) into consumer sized portions, and are still able to resell it at a good price.
Also... a lot of local Amish farm raised produce, baked goods, eggs, and meats. Really good quality stuff.