Would you order a beer because the price went down? If you find yourself in Cincinnati, the Queen City Exchange could test your beer-onomic theory.
A beer choice could range in price from $3.50 to $9 based purely upon customer demand. Other than really testing the prowess of the bars beer buyer, this sounds fascinating as an experiment. I have seen the occasional Which keg kicks first contest, but this demand game would have me glued to a seat where I could see the cost rising and falling.