Floyd Mayweather -- My Crocodile Bag ... Is Worth $150,000

Floyd Mayweather is flossin' a ridiculously rare man-bag ... and it costs more than your CAR!!!!

The boxer just touched down in Georgia this morning ... flaunting one of his favorite expensive purchases -- a diamond Hermès HAC 50 bag made out of crocodile skin.

We spoke to someone from Hermès who told us the bag isn't being sold in stores -- and therefore, it MUST be a custom job (Pharrell had a custom Hermès bag made in 2007).

So, we went to the The Money Team looking for answers ... and one of Floyd's top TMT guys told us Floyd paid around $150k for the bag, which is accented with 245 diamonds on the metal hardware.

It's a drop in the bucket for Floyd who claimed he made around $200 million for the Pacquiao fight.

And he's not done spending yet ... Floyd tweeted to his people in Atlanta -- "Anyone know what time the stores open up? I need to pick up a few items for the [Atlanta Hawks] game tonight."