Most of the value in space resources would seem to be that their mass is already up Earth's gravity well, and less so preciousness. If you need 1 kg of somethi

Most of the value in space resources would seem to be that their mass is already up Earth's gravity well, and less so preciousness. If you need 1 kg of something in space, the cost is {extraction} + {getting it there}. For anything raw or low tech, it'd seem way easier not to have to bulk lift it off Earth.