I'm playing as a second player henchman in Fable II, and I have 34k gold while the other player has 2k or so. Is there any way for me to transfer some of mine to them?
To just give them the gold, no there is not, but if you go into the options, there is a place where you can slide how much money and/or experience the other player receives (as a percentage). So you would be helping them make gold and not earn any yourself, or very little.
If the slider is set so that one player gets all the gold, anything bought and sold will have all the money go to that player as well, so the income is not just limited to kills.