Space launch costs have dropped like a stone over the last decade or two, but it still ain't cheap to lift mass into orbit – SpaceX's best prices are still well over US$1,000 per kilogram (2. ”In an organization like NASA, where projects rarely share parts, there's much more to be gained from custom lightweight designs than there is from designing for bulk, cheap manufacturing. It'll also unlock the ability to print complex moving parts – not to mention the idea of printing parts in space