Well, it's actually more of the entertainment that they want to see and one of it is to see their idol. But knowing the fact that the ticket they're paying for will go to the charity.
That will make them more hype on this match because it is for a good cause. There could even fans that would just buy a ticket without watching the exhibition match because they want just to help.
The split of money is there but the main idea is all about the charity.
I Agree, an exhibition match like this can surely generate a huge sum of profit and money for them, and knowing Pacquiao really likes charity work it could be possible he doesn't hesitate in getting into this fight just to give to the people, but for me, he doesn't need to do such things, if this is to really help out then it is OK but if this could have a hidden agenda or for politics purposed then I really don't like it, in actually I like him as a boxer, an artist and father to his kids, and doing charitable work, or being a senator, but I am against him running for Presidency, for me, he is not really cut to being President,
It's already set and that's one reason why he has accepted the deal for this match, knowing that it's for a charity cause he never escalated and thought twice.
I don't see him doing this with political agenda. He's already past that and he's more for anything he want to do and all of these fights, I guess that his passion for boxing is just hard to remove even if he's already announced retirement.