Chess with a Dragon

The Galactic InterChange is the greatest discovery in history. Through the InterChange, humanity gains access to the combined knowledge of all the worlds and all the races of the galaxy. For librarians, scientists, doctors, teachers, and anybody interested in the spread of knowledge, it's a field day. Just find something intriguing on the menu and request a copy so simple, so exciting! Until the bill arrives. It's the greatest bill in history, and humanity has no way of paying it off. No way except one indenture. Being slaves to aliens doesn't sound like much fun. Yak.