I wonder about this one! I am really unsure about the mind set of these people. If the euphoria is from shopping does it matter what you buy? Can you be just as happy purchasing something from the drugstore?
No. For these folks I think it's like the old sayings, "the more you have the more money you spend" and "the more you know the more you want". For some folks, once they have experience a certain level of quality (real or imagined), they can never go back. You just don't get the same thrill anymore. And to be honest, that is what makes (or made until the recent state of the economy) the world go round.