I don't have all the options, but DD got the dress with tiara and wand in March and it was right about $200. There were options cheaper and more expensive. If you google you should find a price sheet. Prices might have changed a little but likely not very much.
we always buy the dresses on Etsy prior to the cruise and we feel like we get a better dress for about the same price if not a little cheaper. Then we can book the package that is just hair, make up, and nails.