Delta came out with a really unique program this week. Since Delta has a fleet of private jets, it has come up with a way to offer its best customers the ability to upgrade from a scheduled flight to a private jet. This seems more opportunistic from Delta’s perspective. If it has a jet with nothing to do and it wants to get it from point A to point B, it can find a good customer who is flying the same route. But this won’t be free. How much would you be willing to pay if Delta offered you the chance to upgrade?