I don't know what Austin charges for sedation - not even sure if he does it (not something I asked as I prefer to be awake).

I didn't pay extra for x-rays, as far as I know. A small filling costs about £130. A large filling about £250. Tooth extraciton about £325. Consultation was £130, if I remember correctly.

I don't know how he determines if there is mercury left in the tooth. That is an important question.