I think they were instead implying you could just have your groceries delivered for a very low cost. I’ve used grocery deliveries from the chain directly before, but they would sometimes make minor substitutions, like between ice cream brands for instance, that I could not then eat because of dietary restrictions. Returns / refunds were easy but it was still more of a hassle than just showing up to the store, which is usually pretty hassle free unless you pick an exceptionally bad time.