If you are looking for a inexpensive wedding gown and have an idea of what style you want and the size you need, definitely check out this vender on ebay:
http://shop.ebay.com/swaj1956/m.html?_nkw=&_armrs=1&_from=&_ipg=25. The dresses are updated often and most are $200 or under.

I purchased my gown from her in January for 130 bucks. Figured, if I hated it, I could sell it. However, it totally exceeded my expectations! Honestly, I'm in LOVE with my dress (... an Allure, strapless, lace gown)!!! I seriously stare at it a couple times a week, when my fiance is at work.

It was so much prettier than the picture, in perfect condition and still had the $1100 price tag attached!! It is a little big, but with the money I saved, I can afford alterations (... and I won't have to crash diet... ha, ha). Apparently, the vender's friend owns a bridal shop in Scottsdale (not sure which one) and she sells the sample gowns from the shop on ebay. I was also able to pick up the dress in Anthem and avoid shipping.