Posts like this remind we how much better it is to be as part of a large trading bloc to be able to easily order/sample these sort of things, rather than it likely being a pain in the arse to get locally.
A food seller isn't allowed to cut out a grocer because they are too small. However, I believe they get around this today by having minimum order sizes that make it impossible for a small grocer to handle.
That's effectively how my small hometown grocer was driven out of business. The suppliers refused to work with them because they wanted them to order huge amounts of product that wouldn't work for my hometown with 300 people. So, the people running the store ended up just buying products from either costco or another grocery store a town over. The price hike they had to apply was simply too much for the local folk who ultimately also went to the nearby towns to save money instead of shopping locally.
But the town is dying/dead. There's really only 1 major business in town and the school. It's surrounded by farm land.
In my father's day, it had everything from a hardware store, full service garage, a bowling ally, movie theater, restaurant, and dance hall. All that is gone now.
In my youth the restaurant and grocery store were still around. You had to call ahead to the restaurant as they would only open in a call ahead fashion.
I mean, my grocer doesn't sell individual beans either. So why should wholesalers be forced?
But what about prepackaged beans, like 500 gram pack? You can't open the package and expect to pay for part of it. Sometimes the beans are packaged by the grocery store with their branding. That's the same as not letting you buy an individual bean.
https://youtu.be/odhVF_xLIQA?t=338
In this case, Pepsi has reduced promotions and increased wholesale cost for "small groceries" which in this case was a regional grocer with ~1000 of stores across 10 states. If Pepsi is strong arming regional giants like that, imagine how the ant of a real local grocer feels. They are algorithmically getting destroyed