That's interesting, though it doesn't take into account all the non-rocket costs in the launch. Also the factory has to exist, probably the yearly cost does not

That's interesting, though it doesn't take into account all the non-rocket costs in the launch. Also the factory has to exist, probably the yearly cost does not scale linearly with the number of engines produced. That said, once you go there, if launch prices drop to one tenth, all kinds of other things can start to happen.