>>200 That's a difficult question to answer, I think we posted something for Crimson Peak about how it takes years for films to make money back because studios don't make much money from cinemas and they basically operate on debt economy.

I don't believe for a second that Kong has the same budget of Thor2, but let's say that's correct, promo usually costs half the production budget, so at least 300 to break even, but as I said in reality they probably need to do twice that.

I leave you this article, it's quite interesting
http://io9.gizmodo.com/5747305/how-much-money-does-a-movie-need-to-make-to-be-profitable