Greta Gerwig’s upcoming Narnia: The Magician’s Nephew is reportedly being made on an enormous $280 million budget, placing it among the most expensive films in Netflix history. The reported figure underlines the streaming giant’s huge ambitions for its new adaptation of C.S. Lewis’ beloved fantasy world, which is scheduled to arrive in theaters in 2027 before moving to Netflix. The $280 million budget figure was first revealed by Narnia cinematographer Seamus McGarvey during a recent appearance on a We Need…