Teeth!!

Went to NUH Dental centre. Got quoted 1500SGD for a root canal with a waiting time of two months. Are you kidding me?! By that time I will be pulling my tooth with a plier in the Atacama Dessert. I scheduled an appointment with another doctor who quoted 400SGD for a root canal (and asked if I am sure I need it). Why does it cost so much in NUH I wonder? Cannot be a special price for expats, right?