> SLS is a new rocket and you are comparing its development cost to the launch cost of a SpaceX rocket without its R&D cost. Look on Wikipedia, the sideboard q

> SLS is a new rocket and you are comparing its development cost to the launch cost of a SpaceX rocket without its R&D cost. Look on Wikipedia, the sideboard quotes cost per launch as: > Over US$2 billion excluding development (estimate) I'm not aware of the pricing of Soyuz and Ariane V, though.