I had a negative experience. My dress arrived, and I had paid over $100 for it. It was pretty much not the same dress. The skirt went to my knees, the skin colored mesh was yellow, and it fit terribly. It was sewn poorly, too.
I tried returning it, the seller fought back claiming it was what they sent. I wish I'd contested it on paypal to get my money back, because returning it to him cost me $50. I should have just kept it and burned it.