To build a hyper loop costs between USD 30 million per km up to USD 50 million per km, depending on design and technology. It is important to remember that those figures are estimates only, as no hyper-loop railway has ever been built yet.
If you want to know more, please go here. This data was sourced from the book Transportation and the Belt and Road Initiative, in which more data as well as the original primary sources of the data are available.
