That was just an example saying Costco. But, one can try to find someone who has a Costco membership and make a trip together. Or maybe going in on a membership with someone else. If a Costco is near enough, it would make sense to find the money to buy one, because the savings would give enough money back to make financial sense.

5 miles is not a long way. I live in a metro area, one of the highest traffic-wise, and I go that far, no problem.

The car - you have to do this thing called "work" and work at finding someone who has a car and share. Maybe a church has a van that does this kind of thing. I'm not saying it is the easiest thing in the world, but seriously, it is not that difficult to find out if someone has a car that can go to a grocery store, even a normal one, and carpool.

There's a lot of other things one can do to lift themselves out of poverty, that are not difficult.