JayZPArty.jpgAccording to various online reports, Jay-Z spent more than $300,000 on the Sunday night release party for Watch the Throne, his collaboration with Kanye West!

The party, at Miami's Fontainebleau, started with dinner at the hotel's Italian restaurant, Scarpetta, where Jay-Z spent thousands.

The restaurant stayed open extra late for Jay and his entourage -- they dined on tomato basil and lobster mac and took shots of tequila.

The party continued at LIV nightclub, where the group downed more than 18 bottles of Ace of Spades and Jay spent $250,000 on Armand de Brignac champagne, plus a $50,000 tip!