I am writing from karachi not too sure about the market values in Lahore but i did some market research on 05 vitz as i am planning to buy one. Here are the approximate values:
1- unreg. vitz 05 August cleared 775k-800k
2- unreg. vitz 05 October cleared 820k-830k
3- unreg. vitz 05 October cleared BLACK 830-840k
4- registered 05 vitz cleared prior to August abt. 750k (highly depends on the condition).
5- registered vitz 05 cleared prior to August BLACK abt 800k max. (highly depends on the condition).
6- unreg. vitz 06 fresh cleared 900k.
i dont know if it helps this post in anyway how ever my sincere suggestion would be to not sell your car at this moment wait for start of 2009, because 2005 vitz wont be importable and 2006 would 900k+, so add another 20-30k to 800k and this is what you should be able to get.
Good Luck!(Y)