I have a grocery store near me called WinCo. They’re all over the western United states. You can walk into any of them and they have a bulk section and you can grab however much you need. You don’t typically bring your own container for that but I don’t believe it’s disallowed. There are other bulk stores around but typically most people don’t purchase them in bulk they usually just purchase a couple pounds at a time and that’s plenty to be able to last them as long as they need it.