Or you could simply order your weekly groceries and have them delivered so you don't have to keep track of all the children in the store.

I hear a certain Seattle-based business provides such a service.

How much more % wise will your grocery bill be if you have it bought/delivered to you? 20%? 25%? 30%?

on a 500$/month grocery family budget you are looking at 100$ - 150$ more for convenience potentially. Its a lot of money for most.

My local grocery store charges $20 for delivery, with purchases of more than $200 having free delivery. It's not as expensive as you think.

Have you calculated how much a car costs compared to a bike?

yes cars are expensive. for my local situation here im looking at 1.5hrs commute by bike one way or 3 hrs round trip...every day. plus bad winters to deal with. car is worth the convinience ... in my case.

Move closer to work you say? Any cost saving from getting rid of one car will be overshadowed by expensive home prices. Real estate is not really affordable for most folks these days....

Why would delivery be a percent of the total goods cost? NYC has had in-store grocery delivery for a either a flat fee or flat fee per bag for decades.

If your weekly groceries are like $100 and the flat delivery fee is $15, then that's 15%. You can't just buy milk for the next six months in one go to make the percentage smaller.

....therefore it isn't a flat delivery fee?

Someone could easily turn around and say a car is $1000 a month for a "convenience". shrug