If you look at the history of the Supermarket, the concept is only about 100 years old - https://en.wikipedia.org/wiki/King_Kullen

From Ruth Cowan's More Work for Mother: "Butchers, greengrocers, coffee merchants, and bakers employed delivery boys to take order from and then carry purchases back to the homes of their more prosperous customers. Smoked, dried, and pickled fish, fruits and vegetables, second-hand clothing, and linens were routinely sold from pushcarts that lined the curbs and traveled the back alleys of poor neighborhoods."