That's 20 launches for 1 lunar mission. Vs 1 Artemis launch per lunar mission. Comparable to 800 million for 1 lunar mission for SpaceX. So, 4.1 / .8 ... Stars

That's 20 launches for 1 lunar mission. Vs 1 Artemis launch per lunar mission. Comparable to 800 million for 1 lunar mission for SpaceX. So, 4.1 / .8 ... Starship would need to be 5.125 times the cost estimated to cost as much as Artemis. As others pointed out, it relies on un-tested in-orbit refueling and 20 times the opportunity for launch failure. I wouldn't be surprised if it's 5x off. I don't know what SpaceX's overrun record is so far, but I'm sure it's way less than 5x. Edit: It did take 20 tries[0] to get from the first launch of Falcon 9 to vertical landing (after a detour through parachuting systems). 40 million seems like a post-development estimate. [0] https://en.m.wikipedia.org/wiki/Falcon_9_flight_20 https://en.m.wikipedia.org/wiki/Falcon_9_flight_20