Wow dragonflight herbelasim bot - YouTube
they keep abuse low pop server and also since you are in dragonriding mostly you will not notice this one coming, since they always use prowl after looting the node, and they always farming on low pop server ( cuz it dosen’t matter since the auction house was global) and then they can transfer the gold into one account putting the gold into guild bank , after that using guild bank transfer service into high pop realm.
your global auction house idea will become the worst idea if you can’t handle the bot problem.