I assume the original post refers to (1) a bar boy, or someone that has been otherwise picked up for sex, and/or (2) someone you are not particularly interested in long term?

If that is the case, I suggest forever discarding the paternalist do-gooder schtick and simply asking him what he'd prefer as a one-shot-deal gift from heaven.

If he says 'money', then give it to him ~ for that's what he'll probably say ~ and attach no strings whatsoever on it's end use. Attempting to guess what would be best for any individual, or ~ even worse ~ decide for him is a waste of time, money, and energy, and will only be a salve for your own ego and/or sense of need: Thai guys being of course the white man's burden.