Here's the list of most expensive private jets in the world. As We know private jets are probably some of the most expensive toys available to man. Naturally, only the very rich can even think about getting one. But even among private jets, there is a group of ultra-expensive aircraft that you can own only if you treat $40 million or more as nothing more than spare change. You know, like British gazillionaire Philip Green, who owns a Gulfstream G550, and Russian billionaire Roman Abramovich,...