hi hydih.
welcome to the forum.
i recently passed by a goldilocks store window at a mall and saw a layered cake on display with 6 disney princesses included. it was soooo cute. my daughter and i had to stop and look at it. i just don't remember the price indicated but i think you have an option for the number of layers. best to inquire from them.
check their contact info here: Goldilocks
or you can always ask for a quote from the other cake suppliers
happy planning!
:-)