15Rs/MB (~0,146€/MB) for GPRS connection in tariff Telenor talkshawk (Har second/30 second/har minute).

EDGE is available in many cities, see list on their website.

Take a look also on international calling and complete tariffs to be found on http://www.telenor.com.pk/prepaid/index.php

Topups can be bought in Telenor stores, some petrol station and special vans(!) in few cities, also online purchase seems possible.

Settings:
Dial-Number: *99***1#
Modem initialisation string: AT+CGDCONT=1,"IP","INTERNET"
Username: Telenor
Password: Telenor

I wasn't able to find the access point address so I setup a normal dialup connection to get it working.
You can find the place to put the initialisation string in device manager -> modems -> <your modem name> -> advanced settings.