Good solid beetles do turn up for sale every so often but even if the car is half decent you can have it restored for a fraction of what it would cost you in the UK. I would suggest you bring all the parts required for the car over to Pakistan and take home a restored car. The availability of parts for aircooled VW's in this part of the world is a serious issue. The expertise to restore the cars is not a problem. Depending on how much you would like to spend, you can get from a daily driver to a show winner.
Once the car is ready you can get an NOC from the Ministry of Commerce and have it shipped out or drive back home if you are feeling adventurous.
The VWCOP would be glad to assist you in any way possible.