Transfer gold between charactere of same account bannable?

[Mychael]

Using the market board in this fashion could be considered an exploit, as you are messing with the prices on the market board for your own personal reasons.

Not really. He's not doing it to mess with the AH history, and I would assume he's only selling 1 leather at that price; hardly enough to make the history look any different. The worst SE would probably do was an investigation, during which they might or might not ask him to stop. It's hardly bannable, not an exploit.

The real issue here is simply moving items from one character from another. Surely SE doesn't want to prohibit that, I would guess they just didn't think of a way to implement it yet. TBH the OP is just more clever than the other 5000000 people who are just complaining that they can't.