User blog comment:Alfred cloutier/In-app purchases/@comment-27141866-20151218003656/@comment-1934436-20151218051704

As it should be. If spending money, and thus actually supporting the game and its developers, didn't give some form of advantage than there would be no real incentive to do so. There is no "real" game. If anything playing at the highest levels is far more monotonous and a lot less fun than what you consider grinding.