ATS switch price


I have two separate wapda connections installed at home. I am planning to install an ats to switchover between them. My usage is that of a typical home with maximum consumption not being more than 15KW (one 1.5 ton AC, motor, fridge, freezer, few fans and lights). Can you please tell me what would be the price range for an ATS for my setup?

Around 2500 hundred to 10000 rupees in lahore depending upon ur need and usage.