Advertise in Jang newspaper's Sunday edition for which you have to book ad latest by Wed-Thu. Will cost you 550 rs but you will get some genuine buyers. Anyone who knows what a clean car would be willing to pay extra.
Here on PakWheels you will not get some real offer and always here "demand is high."
It is very easy online to give an offer
Only real buyer will come to your doorstep to inspect the car and if car is in good nick you will get close to your demand.
This is based on my personal experience.
BTW I sold Dec 2004/Jan 2005 registered Xli in black colour for 11 in January.