Wedding dresses are expensive here and if you are on a tight budget it may be difficult to find something nice. I also paid 6K for my dress and it was one of the cheapest in the store (The Bridal Room in Jumeirah)
I think I saw a beach style wedding dress for sale on Dubizzle earlier this week. If its not still on there, place an ad and see what responses you get.
crikey is it just me or is over a 1000 pounds - ouch - a lot for a beach style wedding dress. why not get one made - find a dress you like in a shop, take a picture or a photograph from a book/magazine and go to a tailors good luck.