[Miami nightclub] LIV charged Cuban $90,000 for a 15-liter bottle of Arnaud de Brignac champagne, also known as Ace of Spades. Cuban didn't seem to mind; he still left a 22 percent tip.
"We were in the back because his credit card was denied," [club owner] Grutman recalled. "So he called up the people at the Centurion Card and said, 'This is Mark Cuban. We just won the championship. Can I please spend some money?'"
Grutman said the purchase by the billionaire then was authorized.
--Darren Rovell, ESPN.com, on how Mark Cuban doesn't usually spend