You are absolutely correct in stating dentist are getting very expensive in BK, I had a procedure done a little while ago and when I received my bill, I was shocked that it was higher than what it would have cost to have it done back home. There was a time (20 years ago) when getting an implant cost a third of what it would have cost back home.
As far as your anxiety is concerned, I do understand it is very real. Some people have died on the chair being chronically anxious (they probably had other underlying conditions as well). I have heard of acupressure techniques but if you've never had it, I wouldn't recommend it, especially if you try it at the dentist for the first time and it doesn't work. I would go with getting a Valium before getting the procedure.