I think in this case it has some value because of the ritual or the mystique of oysters. There is something about their presentation, their distinctive texture and flavor, and of course the ancient belief that they increase sexual virility.

In a supermarket, oysters don't fit. There is nothing exclusive or sexy about most grocery stores.

But when you're at a nice restaurant terrace hanging out over the ocean, and you receive a large sculptured platter of ice with 6-12 oysters on the half shell, garnished nicely, it is a special thing. Coke vs champagne.