W.S.
Please visit https://galaxy.pk/ , apply different filters, shortlist the one matching your budget, requirements, brand, etc.
Visit the shop in-person during business hours, buy, and you are good to go.
Do insist for discount, although their rates are already reasonable, and it is guaranteed that whichever item you will be buying, it will be 100% genuine and original.
Last time I visited, the shop was in Hafeez Center, Main Boulevard, Gulberg.