The price for recently imported EFi 2003-4 models is around 555,000. The price for old 1993 model, carburetor engine, 300,000 kms driven yellow cab would be 180,000.
As regards to outer spares of the new Alto, they are all interchangeable with the local assembled. For engine parts, there are two autos in pindi which have a good inventory. However, barring accident, I don't think the car would require major engine parts for the next three years. By that time the second hand and chor market would have evolved to a great extent.
The drive is extremly smooth and comfortable. Its equal to Altis in stability and ABS.
I have not had the pleasure of driving it on CNG. But ppl in Islamabad have converted it on CNG with no problems.
Mine is up for sale. https://www.pakwheels.com/xt_details.asp?CarID=9295