[taurath]

Yes it should, but one of the major features/downsides of supermarkets is it doesn't allow you to think about whats in season vs not. Corn can be a dollar an ear even in October when harvesting happens. Tomatoes are the same all year round (tasteless/watery/tart), as are almost all greens. Berries in the winter come from Chile.

If a supermarket had an "in season" section I would shop there almost exclusively, if it meant I was going to to get a good deal and better produce. Even with farmers markets you're not guaranteed to get in season local produce.