Who owns the most expensive luxury house in the world?

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I think it's Donald Trump.
But someone else plans on building an even bigger house and sell it for the most money a house has ever sold for.
You know how the rich are
Always trying to out do one another in bragging rights.
A long time ago I hob nobbed with the rich and behind the scenes high society and I witnessed them going to extremes to out do the other guy by buying something just as gaudy and paying way more money for it.
A guy I knew showed me some art he had just purchassed,a painting he had hanging on his living room wall.
He told me he paid (I can't remember the exact amount) something like $32,000.00 for it and I said "But it's ugly,why would you spend so much money on something that's not even worth looking at?"
And you know what he said? He said that a friend of his just purchassed one and paid $27,000.00 and he couldn't let him get away with that so he had to buy one that cost more money.He said it didn't have anything to do with what it looked like but had everything to do with bragging rights.
He said "So who ever brags the most, wins." and since he paid more for his painting that entitled him to brag even more.
So no matter who has the biggest house there's always some rich fool that's going to want an even bigger one so he can tell all the world that his house cost more and is the biggest.
Personally I think it's disgusting how they throw their money around.
They make a mockery out of money that they made through the exploitation of other people just so they can turn around and waste it on ugly art.