You also have to include the promotional budget to get the real cost. And keep in mind that studios in general only get half the box office, the rest being kept by the theaters. So a film must do at least double it's total cost to make a "profit". I put profit in quotes because due to Hollywood accounting all films lose money.
The studio take slides and is very high in the beginning, generally close to 80%, and drops, it “averages” to 50% except that the big percentage is when the movie makes the most money. Over the life you’re generally looking at closer to 60 or 70% going to the studio. He’s also pulling pretty solid in international. And Quentin has the loyal group of followers, it will do great in blu-ray. Reports of this movies demise are quite definitely imaginary.