Looking For Discontinued Wedding Dress

I am looking for a David`s Bridal discontinued style E8161. I found 2 on ebay - one I lost by a second. The other I won but she refused to sell it for that low of a price; she said she wrote what she wanted in the desciption, but she had no reserve price. But anyway, I fell in love with this dress and I can`t afford what she wanted for it. So if anyone knows where I can get one or has one for a single mom on a budget please respond; preferable a size 4 or 6. Thanks alot.