St. Louis' Cheapest Cup of Joe

I accidently discovered St. Louis' cheapest cup of coffee in the most unlikely place -- Straub's -- the upscale grocery chain. Tucked in the corner of the recently added deli in the back of the store is a coffee stand, where a small cup of Joe goes for 50 cents, much less than White Castle, QuikTrip or the ubiquitious, high-priced Starbuck's.