Dear hussamyalmaz,
An A grade paint job is ok at 60k if ur only talking about the painting. However from mr Rana Sahab's thread seems like he wants a really good job. Makes sense if he visited such a top notch workshop.
Dear Rana Sahab,
I guess if the workshop locks the price at between 90k and 100k you should go ahead and do it as they will use only the best materials and you will get the result that you are looking for. I speak from experience as i myself run an autobody workshop in Karachi. I'm sure u will get what u pay for. Good luck.