The upcoming biggest event in the Marvel Cinematic Universe looks like it will also have the biggest bill of any film ever made.

A new report at Bleeding Cool says that in talking with “very well sourced comic book film insiders in New York bars last night,” they were told that the upcoming two-part “Avengers: Infinity War” saga will have one gigantic price tag – a combined production budget of one billion dollars.

The report claims around $400 million of that is for screenwriters, directors, producers and principal cast members, with Robert Downey Jr. to get essentially “half of the actor budget”. The report comes as there is no script yet completed or even a finalized plot in place.

If correct, this would easily be the biggest budgeted production of all time – well ahead of “The Hobbit” trilogy at $745 million and the single most expensive film to date – “Pirates of the Caribbean: On Stranger Tides” at $378 million.