In theory, you send one von Neumann machine and in a few years it has a planets worth of manufacturing to send you anything you want. Sure, shipping would be energy intensive, and you only get ~59% as much solar energy to work with. However, the equivalent of a 2 million meter x 2 million meter solar farm could produce a lot of energy.

Assuming space elevators, you could replace the vast majority of earth manufacturing. Though, with a long lag time before arrival.