Finally what the he'll is up with having to juggle 4 seperate inventories of gold coins.
It is there to support multiplayer. After all, if you are in a co-op game, do you want the other playing buying things with your gold?
I do, however, agree with you that it is annoying.
I wish the game pooled the gold of characters, perhaps when they are linked together in the top left of the screen.
