That's partly because of the re-release of vintage shoes in limited quantities. Experts who track the trend say the Internet and social networking also have created more interest.
Avid collectors sometimes reap hundreds or even thousands of dollars in profits by reselling shoes they buy for $200 a pair. The recession, and people's need for cash, also may be playing a role. One recent release of limited edition shoes caused riots in Orlando, Fla., and other cities.
