gir cows sale

I am planning to start a dairy farm in 5 acres of farm land with good water supply in Gulbarga, Karnataka. I want to start with 10-15 Gir Cows. Please let me know: 1. From where can I get the pure breed of Gir Cows? 2. What would be the price of a cow which is having yield of 10-12 liters of...