How much does an Oscar win boost a films earnings? I found this really neat graph below that shows the last ten Best Picture winners and their pre- and post-Oscar earnings. Check out how much Million Dollar Baby benefited from their little gold statue. And Chicago earned over $100,000,000 after their win.
Of course, Titanic had the biggest overall monetary increase post-Academies (at over $260,000,000), but it hardly counts, seeing as the film had already grossed well over $300,000,000 by then.