A source connected to Floyd confirmed the purchase -- but says Mayweather has since added a SECOND Rolls-Royce Ghost to the final order.
Obviously, Floyd can afford the rides ... not only has he banked around $1 BILLION from high-profile boxing matches over the years -- but Mayweather told us he's expecting to make around $100 MILLION from the Logan Paul fight!!!
Chop tells TMZ Sports ... Floyd has purchased 157 vehicles from Towbin over the years -- including 29 different Rolls-Royce automobiles!!!
Guess that makes Floyd TBCE -- The Best Customer Ever?!?