This "effect" exists locally in California. Identical products are cheaper in the Central Valley than they are in San Francisco, which makes perfect sense consi

This "effect" exists locally in California. Identical products are cheaper in the Central Valley than they are in San Francisco, which makes perfect sense considering that the "product" (if it is a hamburger) includes the convenience of being immediately available in a high-rent high-wage area. Similarly, Hass avocados from California retail for less in Baltimore than they do in Oakland.