If the economic slump has you swearing off the stock market, bring your trading prowess to Michigan’s Kalamazoo Beer Exchange, where the beer menu looks more like a NYSE ticker than a tap list. All 28 Michigan-leaning drafts are priced according to real-time sales: When several patrons buy a particular pint, they drive that beer’s price up; beers that aren’t in demand fall, and daily “market crashes” sink beers to basement lows. The system drives drinkers to consider, say, swapping a popular Dark Horse or Founders selection to a lesser-known, lower-priced draft like Round Barn Oaked IPA or B. Nektar Zombie Killer cyser. “You’ll walk in and see Bell’s Two Hearted for $3, and Bud Light for $3.50,” says founder James Flora. “Where else in America would you see that happen?”