Actually, it depends on multiple factors like Quantity of cameras, Location, and Wiring.
CCTV Camera wiring charges with complete material including Pipe, Socket, Channel Patti, Coaxial Cable RG-6, Electric Wire 23/76, Hardware Stuff & Labor ( Rs. 30 PKR/Feet )
Camera installation charges including Supply Box & Supply Sheet (Rs.500 PKR/Camera).
As a previous Sales and Business developer experience dealing with business requirements and managing the CCTV technician team and labor. I recommend you to please check out the companies like CCTV camera in Karachi in your city and google and find out their rates. Tell your detailed requirements like what you want.