Cordwainer Smith’s 1975 Norstrilia was originally published as two shorter novels: 1964’s Hugo-nominated The Planet Buyer (AKA The Boy who Bought Old Earth) and The Underpeople (AKA The Store of Heart’s Desire). The setting for both is Smith’s Instrumentality Universe. The books were later combined in one novel, as indeed Smith had originally intended. Believe it or not, but at one point SFF publishers thought long books didn’t sell.
The story is simple. There was a boy who bought the planet Earth. We know that, to our cost. It only happened once, and we have taken pains that it will never happen again. He came to Earth, got what he wanted, and got away alive, in a series of very remarkable adventures. That’s the story.