A friend of mine has been buying a dress online from LittleCoral Wedding Store - Professional Manufacturer of Wedding Dress Bridal Gown, Bridemaids, Flowergirls Dress and she is satisfied with the quality and making time. Most of the dresses sold there are under US$300.00 each, if you have the budget of $500 or more, you may have the chance to get both the dress, bridemaiddress or even some more accessories there. I think it's worth to try since they accept the paypal payments and provide the return or remaking policy.