I think the analogy holds in this respect: in both cases, you <i>can</i> get it from the supplier, it&#x27;s just less convenient, either because of having to go there, or needing to be shipped a longer distance, or needing to buy a bulk.<p>(Per sibling, a more relevant difference would be Walmart&#x27;s having permission, but I&#x27;m not sure that&#x27;s relevant to the consumer expectation; &quot;telling you how cheap this stuff is from the source&quot; is the kind of &quot;facilitating you getting it cheaper&quot; that we <i>don&#x27;t</i> expect retailers to do.)