My wife would emphasize this: if you are shopping for produce you want to choose products that are good quality on a given day and individual instances of those products that are better than average. If somebody else is picking there are agency problems.

Now we do have the problem that we struggle to find the time for grocery trips (ag work keeps my wife busy from sunrise to sundown.) Seems to me that a highly personalized delivery service backed by a full-service grocery that links your in-store experience to deliveries that you get could be a good idea, with regular deliveries approximating a “subscription” the economics would improve, overhead for $300 of groceries would not be much more than $30 and in our case we could tolerate deliveries coming in at a time that is cost-effective for the supermarket.