This is about interest charges which is faily boring, but the book Critical Mass has some interesting comments on economics of materials in translunar space. Compared to materials on Earth, the value of materials (e.g. for construction) is entirely dependent on their position (and orbit). 100 tons of packed lunar regolith is worthless on the lunar surface, but would be highly valuable in a medium earth orbit where it could be used to construct quite a large hull via chemical vapor deposition.