Nicki Minaj -- Headlining Post-Fight Mega-Bash ... Got $10k For VIP Table?!

Nicki Minaj is cashing in on the Mayweather vs. Pacquiao fight -- headlining a HUUUGE concert after the brawl ... with VIP packages going as high as $10,000-a-pop!

TMZ Sports has learned ... Nicki -- along with Funkmaster Flex, Sevyn Streeter and Jeremih -- will be performing at Chateau nightclub at the Paris in Las Vegas directly following the fight.

Tickets start at $80 ... but gets more expensive the more baller you get.

The top V.I.P. package runs about $10k and includes 10 tickets, a V.I.P. table, 4 bottles of Belvedere Vodka, 4 bottles of Dom Perignon Rose Champagne, 2 bottles of Hennessy, 24 Waters & 24 Red Bulls.

And get this ... if you can't make it to Vegas, you can still watch the show -- because we're told it will be broadcasting via Pay-Per-View as part of the Mayweather vs. Pacquiao fight package.

In other words, if you order the fight ... you also get the post-fight concert.