I'm in Sydney and have had 2 root canals on back molars. My dental specialist -Endodontist did each one in one sitting. Cost $2k each one. If u are going to do it privately definately go to a Endodontist. That's all they do and are proficient and expert. I have heard many bad stories about your regular dentist doing them. I then had to fork out for crowns of $2k each done by another dental specialist - prothodontist. If u going to spend the money it's best to get the professionals to do it.