After expenses?
The financial difficulties with playing professional pool is that the expenses are so high, as most know.
My experience of attending tournaments in the United States only, primarily the East Coast, as an example, it costs about $35,000-plus per annum.
I cannot imagine with a tournament soldier who travels the globe, like Alex Pagulayan, forks out for expenses on an annual basis.
Some foreign governments sponsor pool players, but here in the United States, that will never happen.
That leaves sponsorship to the pool industry, which is already spreading itself thin. There's a few American players sponsored by pool industry, that have all their expenses paid for and receive a monthly check, but that is the exception rather than the rule.
So, in sum, a decent salary for an American pool player -- not one that travels to other countries all over the globe --
would be 75- to $100,000, I would think, if you were to separate out $35,000-plus for expenses. JMHO, FWIW!
Note Bene: I have no expertise in playing professional pool. The above-referenced comments are my opinion based on my personal experience.
JAM