That's a much simpler project. It's deployment, not construction. Two metric tons of mesh have to be soft landed at the bottom of the crater. Then mobile robots pull it open into a large dish.[1] There's a cheaper approach where the mesh is pulled open by weights shot out from the central lander. Cost estimates are in the US$1 billion to US$10 billion range, most of which is shipping cost to Luna Farside.
[1] https://www.dropbox.com/scl/fi/d4pivfipd9rpb19fm87lq/LCRT_NI...