i have found this and does not know if it works. You can delete this post if u wish
World of Warcraft dupes are extremely rare as they could be worth a lot of money, websites selling only a ‘dupe method’ are 100% scams, do not pay for them, they simply explain how to abuse ingame lag which is very unreliable and doesn’t’ work in practice. More common World of Warcraft dupes are item dupes or ingame gliches which require a certain situation for a small benefit. An example of a recent dupe would be the GM Dupe which took advantage of the name abuse power. Player A would create a character with an offensive name, Player B would then transfer all her gold to player B (1000 gold, for example). After 20 minutes, Player B would warn a GM that Player A has an offensive name.
A GM will then contact Player A saying ‘You’re going to need to change your name, I’m logging you out in 2 minutes’, during which time Player A would transfer all the gold back to Player B (1000 gold). Player A would then be logged out of the game, but when she logs in again, she’ll still have the 1000 gold as there’s a slight lapse in time. That way, both Player A and Player B have 1000 gold, the gold has been duped. This method however was patched a few days after it became public and will no longer work.