We order a lot of stuff delivered from Walmart; they have free delivery with a $35 minimum order. Walmart seems to have private freelancers doing the deliveries in their own vehicles (or sometimes in rented U-Haul or Ryder small trucks), and they presumably deliver things from the local store, which gives them an edge over an outfit like Amazon which uses professional deliveries from fewer and more distantly located warehouses.
But what’s striking is that Walmart frequently sends items from the same order - many of which are very cheap - in separate deliveries, which seems completely uneconomical and undercuts the whole point of the $35 minimum. Just a half hour ago, a woman pulled up and dropped off a single package of plastic food (“saran”) wrap, costing probably a couple of dollars. Hard to see how the profit on that sale could come anywhere near the cost of having this woman deliver it. And this is not at all uncommon.