@PotMetPetunias @Nonilex you missed the point.
NASA had to assure that everything works at the first try of everything they had to do. That expresses in so much safety that it is unholy expensive...
SpaceX is doing everytime the cheap version, it fails, then the component that failed will be replaced with a more expensive component until it works.
The then working result is every time cheaper than NASA does.
#SpaceX #NASA