Check this out:
www.greekduds.com
I go to the University of Tennessee in Knoxville and discovered a new website where you can find clothes for Greek events- they list clothing in 3 categories: formal, themed, and designer. It's cool because it's kinda like Ebay and Craigslist combined, but it's free and it's only for Greeks. You can put your own stuff on their and sell it or look at other people's stuff. Do you think this would work at other schools?