I think at least $75-100, thats on the cheap sid too! people have no idea how many man hours go into these works of art, to me $40 doesn't even touch materials! You might try cake boss software to help u figure your cost and time etc.. Hope that helps
Such a cute cake! I agree with the previous posters though, it takes far too much work to do that. Charging $40 would be cheating yourself because fondant and other materials do cost money for the baker too!