Listen to What Did It Cost? (From "Avengers: Infinity War"/Score/Extended) online. What Did It Cost? (From "Avengers: Infinity War"/Score/Extended) is an English language song and is sung by Alan Silvestri. What Did It Cost? (From "Avengers: Infinity War"/Score/Extended), from the album Avengers: Infinity War (Original Motion Picture Soundtrack / Deluxe Edition), was released in the year 2018. The duration of the song is 3:35. Download English songs online from JioSaavn.