They actually were an instant success,but people expect them to perform at a high level consistently even though thats tough when you are 21.Oscar just came to Europe for example.About the price tag, thats based on potential.Xavi and iniesta were nobodies at 21, hazard was huge in ligue 1 and Oscar is Brazil's 10 while tearing CL apart.Im a bit concerned about Mata though, I expected him to improve his consistency this season.He ghosts too much