My friends and I were having a hard time deciding whether we were going to buy ESO upon release. From playing the beta sessions, I found the game to be okay, but not great.
However the questionable decision of the publisher to attempt to extort more money from Australians by using a regional pricing model made the choice a lot easier.
Not all publishers use regional pricing. It is not necessary for the financial success of your game.
It's pure greed.