FLOYD MAYWEATHER'S RIDES WORTH AROUND $7.3 MILLION ... Not Counting the Jet

Most people can't afford one Bugatti supercar, worth around $2 million, Floyd Mayweather has THREE.

The boxing champ just showed off his insane car collection, comprised of some of the most rare and expensive cars in the world.

Here's the checklist with approximate market values ...

Bugatti Veyron $2 millionBugatti Veyron -$2 million Bugatti Grand Sport - $2 million Ferrari 458 Spider - $250kFerrari 458 Spider -$250k Lamborghini Aventador -- $400k Porsche 911 Turbo S $180k Ferrari 599 GTB Fiorano - $300k

Grand total ... $7.3 MILLION.

And unlike Justin Bieber, Mayweather has his own private jet ... and they don't exactly come cheap.

FYI -Mayweather has reportedly made more than $400 MILLION in his career ... and clearly, he ain't afraid to spend it.