floyd mayweather takes on manny pacquiao in las vegas on may 2 .
the two men will split a $ 300m purse , with mayweather taking 60 per cent .
the fight has been five years in the making and was agreed in february .
it pits the two pound-for-pound boxers in the world against each other .
mayweather-pacquiao is 11 days away ... why are there no tickets on sale ?