Musk himself said the cost was <1M$ in 2019: https://twitter.com/elonmusk/status/1179107539352313856 https://twitter.com/elonmusk/status/1179107539352313856 An

Musk himself said the cost was <1M$ in 2019: https://twitter.com/elonmusk/status/1179107539352313856 https://twitter.com/elonmusk/status/1179107539352313856 And in the next tweet, he mentions his concern is about "secondary structure", which I take it to mean all the infrastructure that you would need to build and operate to make that rocket fly.