Since i am searching the same, let me share mine experience with you.
What i am doing is, keep in touch with olx/Pakwheel for new adds, contact to the seller for physical inspection, if car is good enough to buy then next phase will be physical inspection by mechanic & Denter to verify engine condition and accidental verification and then price bargain phase will be coming.
Most important thing, get verify the car from 15 by yourself for your own peace of mind.
