My wife suffers from agoraphobia and is autistic. We (honestly: she, as she arranges it) do something similar, but we don't live in a country with tipping culture, so its a flat 100 EUR or so (you can also pay per delivery then the price fluctuates, a decent way to evaluate). Sure, it has cons. Sometimes stuff isn't fresh (report, and get your money back), or the expiration date doesn't suit our planning. Sometimes stuff isn't available or its not included. But it really does help, especially if you have difficulty leaving the house for any reason (we got little kids as well). I also find covid-19 a good reason to not go to the grocery store. However, you miss out on the fresh air and increase lack of movement. Get your little children out, for example to the local playground. A dog can help with that, too. And finally, have a buffer storage esp. with regards to non-perishables, just ensure your house or apartment can deal with the extra storage (e.g. we got an American fridge/freezer).