Dear Mr.Sitaraman,
i dont know from where you are. Anyway you can try buying cows from Kaverippattinam.You will have to negotiate very very hard,act walk outs, act as if you are not interested to deal, like that. Kaverippattinam is between Hosur and Krishnagiri.You will get good HF Cows and calves there.See three time milking(continously for three times) and select cow within three lactations. Happy buying!!
MKTVM