What is the price range of a mega yacht as of 2015?

Mega yachts sell for an average of $8 million as of 2015, though the most extravagant examples cost as much as $1 billion or more. Mega yachts in this class include the Admiral X Force 145, a 465-foot mega yacht thought to be the most expensive ever built.

The terms mega yacht, superyacht and luxury yacht are often used interchangeably to refer to the same basic class of vessel. Most sources consider a yacht of at least 75 feet in length with extensive luxury features and a professional crew to meet the definition of mega yacht, though these vessels are dwarfed in both size and cost by the very largest ships of this kind.