A good consultant will walk you through everything, including the price, color, style number and name, delivery date, deposit, estimated alterations fee, and cancellation policy. As for the deposit, “50 percent is standard—you should never, ever pay more than that,” says Ingram. If you do, and for some reason the gown you ordered doesn’t end up being what you expected, you could be out thousands of dollars. Another thing to take into account: sales tax. Some brides forget about it, but it can significantly add to the price of the dress.