If anyone is looking for a place to buy a cheap gown off the rack, I stumbled across this place in Uptown looking for a place to get my dress pressed. The owner (I think her name is Deborah) probably has about 200 or so dresses that she is trying to get rid of along with a few accessories. Once the gowns are gone, she will use the showroom for alterations, custom veils and gown cleaning and preservation.
The place is just a very basic stuffy showroom--it wouldn't be the bridal experience of your dreams, but for someone on a budget, it might be worth a looksie. She charged me $75 to press my dress which I thought was a little high--but she did pin on straps to hang my dress since my photgrapher cut mine off on my wedding day.
http://whitegownshowroom.com/