PS.Now Pakistan change the price (Try Indonesian)14.79$
1st u need to download Vypervpn
https://www.goldenfrog.com/vyprvpn/windows-download
2nd U need to connect Pakistan at Vypervpn
3rd U open steam and change store region to pakistan
4th Buy PUBG
5th Close steam and disconnect from Vypervpn
6th Now open steam and enjoy your PUBG 10.49$
If u want to know what region is cheapest for other game check this website