Drake & Jas Prince -- Celebrate with $20k Bottle of Bub ... Now THAT's a Friend

We hope Drake sipped his champagne very, VERY slowly at a wrap party for his tour -- 'cause his pal Jas Prince basically dropped the cost of a Honda Civic on a single high end bottle at the table!

Drizzy ended the first leg of his Jungle Tour in NYC over the weekend, and then turnt up with Young Empire Music Group owner Jas Prince, Future, Chubbs, Jim Jones and a bunch of other celebs at 2 clubs.

Sources tell us Jas decided to toast Drake's success with a $20,000 bottle of Ace of Spades at VIP Room. Then, when the party moved to Up & Down Nightclub ... Jas scooped up 6 more mortal-sized bottles for the party.

We're told Giants superstar Odell Beckham and comedian DeRay Davis also stopped by their table ... 'cause why the hell wouldn't they?

Quick backstory: Jas discovered Drake, and as we've reported ... he's actually suing Cash Money for allegedly stiffing him on Drake-related funds. We're told the lawsuit is ongoing, despite false reports Jas had lost the case.

No one drops $20k on champagne to toast a loss.