Maybe just play the game instead of trying to manipulate markets? Like what’s the point? If you have enough gold to transfer to another server, buy up all the Black Lotus, and then transfer back, what’s the point? You have enough gold for anything you might conceivably want or need in-game.
I can only conclude that the reason you are trying to amass so much gold is so you can sell it for real $. So, I have no respect for you and I hope Blizzard recognizes this as a kind of exploit and make it against the rules and bans you for gold selling.