If I get an income of $2000 dollars, then I will prioritize daily needs, bills, and other necessities, but I guess there will still be 30% left. So 15% can be used for savings and 15% can be used for gambling. $300 is a sufficient amount for gambling and if I can win then I will have more money to buy something I want (or just to save), but if I lose then it's okay.
But for gamblers who are still addicted I feel this is certainly not enough for them because indeed there are even more than that maybe even $300 will only run out in a week or two.
but it is very good that you do percentages and calculations so that you can allocate from your monthly funds