Hi Safiriona,
Could you elaborate about your school homework ? More details about it ? Are you only looking at Go pros' incomes,
or incomes of other professionals in Chess, XiangQi, tennis, baseball, basketball, golf, etc. ?
Of course, personal finances are usually private information.
It depends greatly on the individual -- the "top" pros who win major title tournaments
will have different incomes than those who don't.
There are pros who make their living only from playing in tournaments.
And there are those who make their living mostly from teaching tuition fees.
It also depends on the country.
In China, the Chinese Go Association -- what's their "cut" ?
In Japan, the Nihon Kiin -- what's their "cut" ?
In Korea, the Korean Go Association -- what's their "cut" ?
If a pro makes $10,000 from a tournament, how much of it do they keep ?
How much goes to the Association ? What are the conditions ?
Does it depend on the tourney ? Does it depend on the sponsor ?
What if a Chinese pro plays in a tourney in Korea ?
What if a Korean pro plays in a tourney in China ?
And then there are taxes. There are many subtle questions.
It's like asking about the incomes of any other profession:
medical physicians, pro pianists, electricians, carpenters, etc. --
There are so many factors involved.
It's quite a bit of work -- enjoy your research.
