Well bro, suzuki kei is availabe readily in islamabad and rawalpindi i have no idea abt the khi market
it ranges around 400-450 K here...
spare parts as i have already been telling the PW members repeatedly tht spares of any car being in pak is not at all a problem....the engine is 660 cc as stated by antoerh brother.....and can be maintained very well in pak like other suzuki wheels such as mehran, liana, baleno or alto.
Resale is un doubtedly a problem for such out of market vehicles....but purchasing it for personal use is such a best idea.. 
if any queries you can even call me..
mod edit: thank you for your detailed reply and we welcome such posts from you, but do you have permission form the admin to advertise your services on PW or are you offering a PW discount or something else?