Brother both City Vario and Steermatic cannot run on CNG that is why in Karachi you can get both 2006 facelift models for around 750K mileage 100K KM or less.
City M/T runs good on CNG and is one of the most fuel economical car even more than old shape XLi on CNG that is why it is expensive good one 2006 model would be 800K with 100K mileage.
A 1994 E100 JDM Corolla could be your best bet in terms of parts and reliability if you can find a good one in 800K. 2002 SE Saloon Auto versions are also available in KHi for same price.
2003-08 City front shocks pair genuine Thailand 13,500, OEM KYB GR-2 gas shocks 7,500, KYB AGX shocks 18,000. Rear shocks pair Thailand genuine 9,000, KYB GR-2 /Excel 7,000, KYB AGX Not available.
Kabli shocks all 4 in 6000 rs with one year guarantee.
Front headlights pair Stanley 8,000 Depo 6,800, Kabli 2,400.
Parts are cheaper than 2009 current City and 2009 City parts are cheaper than Eagle Eye Prosmatec 2001-06 models.
All kinds of parts Alternators / Clutch plates, Rings / Pistons / Spark Coils, ECU, Throttle Body, Airbox and body parts etc accessories are easily available in both new and used in which Japanese/ Thailand / Malaysian and Chinese parts varieties are available according to budget.