[angryprofessor]

>But, as far as I know, there are none in the city limits of Chicago and New York.

This isn't because wealthy people don't want to shop there. In both NY and Chicago, unions and their lackeys on the city council didn't allow walmart into the city.

My general impression: in the NY suburbs (where walmart does exist), people will do weekly shopping at whatever store is closest/most convenient. The "shopping for fun" that many wealthier women do is a target only activity, however.