With the third installment in the Avengers series from Marvel ready to hit the big screen later this month, advertisers are preparing to let loose their promotional campaigns tied into the latest Marvel Comics Universe theatrical release. According to sources, the advertising campaign budget for Avengers: Infinity War will be the biggest one ever for a movie with an estimated budget of at least $150 million. For comparison, the Spider-Man: Homecoming campaign was pegged at $140 million while Guardians of the Galaxy, Vol. 2 was estimated to have an $80 million promotional price tag. Included in the list of companies participating are Samsung and OnePlus.