Actually, if we're talking cast budget, no one member got that much money except for big RDJ. The number of millions of dollars between the amount he was paid and the amount other actors, even SLJ, was ludicrous. Each one did not in fact get 50 million, or even anywhere near that, besides RDJ. Maybe it's because of his reluctance or because he is by far and a way the funniest man and arguably the most talented actor there, we will never know.