[sgxin]

If non wisdom is so X ,why not use the money on replacing it with crown?

I am not sure on the details as I only briefly chatted with my fren over the phone.
I too think a non-wisdom tooth extraction should be simple and don't cost much - MrsSti string method should work too.

But I suspect the higher cost should be due to a badly decayed tooth where the roots broke off during the "simple" pulling and thus require additional surgery for their removal.
The dental clinic visited by her is just a "normal" one that one can find in many HDB estates or malls.