What  does a billionaire do when having a private jet becomes so  affordable  that mere millionaires can swing the cost? He trades  up--to a  Boeing   747-8, say, or to a    Airbus  380--costing $280 million and $300  million, respectively.
Back   in 1996, when Boeing introduced the first "personal use" version of  one  of its commercial airliners, the $30 million Boeing Business Jet (a   reconfigured 737) was treated as the last word in spaciousness and   luxury. Now, compared with competing luxe lifts, a 737 looks like mashed   potatoes.Here is the list of most luxuries and priciest private jets.
Airbus A380
 $300 million-plus
 Although  the name of the sole purchaser of the Airbus A380 remains a  secret,  the plane is widely thought to have been ordered by a member of  Gulf  State royalty. No doubt the owner will take advantage of the flying   range. It can travel 9,000 miles nonstop, without refueling--the   distance, say, from Chicago to Sydney, Australia.
Boeing 747-8
 $270 million-$280 million
Also  known as the 737-900ER, this classic business jet is the latest   updated version of the plane that pioneered the concept of converted   commercial jets in 1996. Its state-of-the-art flight deck systems, such   as Head-Up Display, Global Positioning Landing System and Vertical   Situation Display, bring this model to the top the tech queue.
Airbus ACJ 
$65 million-plus 

Aviation company Privatair uses the Airbus Corporate Jet to accommodate several of its high net worth customers. Heads of state--including French officials and the president of Brazil--use the plane as a main form of transportation, says CEO Greg Thomas.
Aviation company Privatair uses the Airbus Corporate Jet to accommodate several of its high net worth customers. Heads of state--including French officials and the president of Brazil--use the plane as a main form of transportation, says CEO Greg Thomas.
Bombardier BD-700 Global Express
$45 million

The ultra-long, ultra-speedy corporate jet makes flying from New York to Tokyo almost a breeze, thanks to a top speed of almost 600 mph. What's more, it's got a spacious 48.5-foot cabin.
Embraer Lineage 1000
$45 million
The ultra-long, ultra-speedy corporate jet makes flying from New York to Tokyo almost a breeze, thanks to a top speed of almost 600 mph. What's more, it's got a spacious 48.5-foot cabin.
Embraer Lineage 1000
$40.95 million 

The company calls this "the most accomplished and luxurious business jet ever brought to market," and it has launched a massive marketing campaign at high net worth individuals and heads of state. Announced in May 2006, this 19-passenger jumbo jet will take its first flight in the middle of next year.
The company calls this "the most accomplished and luxurious business jet ever brought to market," and it has launched a massive marketing campaign at high net worth individuals and heads of state. Announced in May 2006, this 19-passenger jumbo jet will take its first flight in the middle of next year.
Gulfstream G550
$36 million
This business jet not only won the approval of London-based billionaire Lakshmi Mittal--it's also used by the U.S. Air Force. The aircraft's attributes include a satellite-based Global Positioning System, enhanced weather radar, autopilot and a military-style "heads-up" display that allows pilots to take their eyes off the control panel.
Dassault Falcon 900
$33 million-plus
This  three-engine corporate jet is one of the more technologically advanced  airplanes out there and is one of the only corporate jets that offer  more than two engines. Billionaire Sergio Mantegazza, president of Swiss  tour company Globus & Cosmos, is a confirmed Falcon owner.


