How much would you pay for that last Sheryl Crow CD you need to make your collection complete? $12? $15? How about $4.99? That's what we paid for one of her older discs on a recent trip to Tempe's Zia Record Exchange, the music mecca for starving artists and broke college students. The store carries thousands of used titles, from death metal to country, plus the hot new albums in each category. Fat Joe? Got it. Nine Inch Nails? Check. Vanilla Ice? Sadly (and not unexpectedly), there's a whole row of that one. Not only are the prices super cheap, but you don't even need money to make a purchase. Just bring a few CDs for trade (come on, we know you have some Weezer lying around gathering dust) and you can get store credit toward that killer Snow Patrol disc you've been dying for.