According to Latino-Review, the actual freaking budget for Batman v Superman: Dawn of Justice is an unreal $410 million. If this is true, this film will be the most expensive movie ever made – and biggest risk taken by a studio almost assuredly. Based on the lukewarm reception for Superman’s latest, and bloated, standalone film Man of Steel. This film will even top Pirates of the Carribean: At World’s End‘s budget of $341 million.
This site also claims that the estimated budget for the movie after Batman v. Superman is, Justice League, will be a staggering $500 million.
Side note: Marvel’s Infinity Wars 1 & 2 will cost upwards of one billion dollars. Scary.