There's a shop where you can find 45-50cc petrol Scooters and some made in China electric scooties. it is near Kamran Market. But I'd say if you can afford to spend more, try to import Honds Super Cub 50cc. it's cheap, the hardest machine suitable for pakistani roads and consumption is 110kms/liter (ONLY 0.55 Rupees/liter) however, you can't cross 50kms/hr.
otherwise, go for some like Hero.
dont know about pk but this scooties are in millions in every road or even street of china i also have onehere u can buy a goood one for like paki 25000 brand new it will run for like 40 km when fully charged very comfortable and durable and it will give u a max speed like 40-45 km/h however spend more get more its too cold outside otherwise i would have given u pictures;