I am about to view the movie again. Some follow-up questions before they intrude on my enjoyment.
Circa early 1750s, the time where I date the story to take place, I agree that Trelawney, Livesey, and Jim would obtain more than the other members of the treasure hunters. Smolett would have received a handsome amount, less than the "owners"; Hunter and Joyce less, still receiving more money than they would otherwise have in their entire lives.
But the bug in the soup is Ben Gunn. While he is a non-entity within the treasure hunters and crew, he found the treasure. And it must be remembered that the treasure is stolen loot, belonging to whoever gets it - Ben Gunn.
But Ben Gunn needs the treasurer hunters to get off the island to enjoy his loot. And Ben Gunn had been a pirate with Flint and murdered one of the pirates to throw fear into all of them. So he is no casper milquetoast.
So distribution of the treasure becomes less obvious for me. I don't see Trelawney and Livesy allotting a meager sum to him. I don't see Jim allowing it anyway. And I don't see Ben Gunn with putting up with less than his "fair share," the phrase that got him marooned in the first place.
Anyone with input I will appreciate. . . . Yeah, trivialities sometimes gnaw away at me like an ulcer.