I don't know if any of you are on RueLaLa.com but they always have these 2 day sales where they sell designer products much cheaper than retail (each "boutique" is only open 2 days, and the good stuff sells pretty quick)
Anyway, right now now they have some wedding dresses $500 and under and a few men's tuxes at good prices too.
You need an invite to join, so here's a link.
www.ruelala.com/invite/nova726">
http://www.ruelala.com/invite/nova726