Buy JDM from trusted person. Auction sheets are faked by most. You'll find a 4.5 grade for an accidental car.
Resale would be good for well maintained cars, but don't expect suzuki like resale. Checkout few ads on pakwheels for old JDMs and you'll get an idea. Hopefully.
Parts are expensive, if you use original parts. You can always have local cars parts fixed that suits your budget like screen and mirrors etc. Mechanical parts alre also available (as I heard). Allah forbid any accidents, then its a costly business. But if one drive below 50 kmh and sensibly it should not be a worry. Btw that's where you get best milage too.
If you read out the new JDMs specs you'll find some that have more safety features (nissan and honda) than other "popular" ones in pakistan (mira and passo). I think for use by better half and kids these features can be real handy. Your budget is reasonable to get these. Features like traction control, vsa, back door airbags, keyless entry, 360 degree car view, ....
I bought Honda N-WGN Custom recently for 12.5 lacks. Alhamdolillah. Not auction grade car but trusted dealer and got pakwheels car sure inspection (94%) before full payment for my own satisfaction. It has most of the features that I mentioned. And its one of the most popular car in japan, not yet popular in Pakistan though.
Try to read online about these cars for a few days either on pakwheels forum or better directly on Japanese manufacturers website. Use your mobile phone for instant google translate. Then make your mind for a few options. If you have more than 3 months to wait, better have your choice car imported else try to find one readily available. Also search car reviews on youtube before and after you buy one.
Best of luck and do update on your choice.