Look, heres another example:
https://gamefaqs.gamespot.com/a/forum/8/8a60c417.jpg
The delivery fee is 9,000.
But by ordering on the app for delivery, Ive saved 105,000.
So, as counter intuitive as it is, involving another human being and getting him/her to drive it over to me changes the price (in this instance from 270,000) to 192,000. Its significantly cheaper.
Those offers can be used again and again on that order.