Don't know about "upper" class, but definitely middle class. A lot of things at Costco (at least where I live) are only available in organic formats, for exampl

Don't know about "upper" class, but definitely middle class. A lot of things at Costco (at least where I live) are only available in organic formats, for example, which jack up the price for no real benefit (imo). The working poor don't usually have the flexibility to do these kinds of things.