From what I've read about them.....
...they are one really nasty bunch. They own properties, businesses, farms, etc. From what I read, the "congregation" works for the businesses at a low wage....but live in Kingston Group properties, how good the arrangements are, depends on how much favor you have with the leadership.
They also deposit all their money into the Kingston Bank...and if you want to draw out any significant savings...it takes over a week and draws attention. Making it, almost impossible to escape when they start following you, harassing, make it difficult to go to the bank, false imprisonment, etc.
So awash in cash from renting, selling crops, etc. they continue to grow the financial empire.
And it gets worse, if there are too many males, they often get the boot and forced into living in the streets, with nothing other than the clothes they are wearing. This is to make sure the leadership or up and coming leadership get their top choices of new "brides". And it doesn't stop there, its not unheard of an uncle marrying his niece. I'll let that sink in.