For those who haven't been paying attention, it appears Amazon is trying to "disrupt" the grocery market. Anecdotally they have been selling shit for crazy low prices and they'll make like 30 separate trips to your house all on the same day with lined/insulated packing for the perishable items and frozen water bottles (no extra charge to the customer) in each bag to keep the food cool in transit.
It seems like there is no way they can be making money on this process, which tells me they are speedrunning Walmarts strategy of operating at a loss to force other grocers out of the market.