Well, apart from a first stage that's designed to be re-used more often, there's also a second stage that's designed for re-use (and no fairings that are ditche

Well, apart from a first stage that's designed to be re-used more often, there's also a second stage that's designed for re-use (and no fairings that are ditched). So simply by not throwing anything away (except for reaction mass) they have a cost advantage (assuming everything works as planned). And at least the F9 first stage has proven to be considerably cheaper to refurbish than the the Space Shuttle, so I'm confident that they won't fall into the trap of having re-use at a cost that's way above throwing the hardware away after every launch.