I want to know her fair price.

Gir cows usually sell around forty thousand to one lakh fifty thousand rupees. A fresh milking cow with good yield, clean udder, and early lactation gets better price. If she is in month seven or eight, the price drops fast because milk falls. Milk her in front of the buyer, do a CMT test on all four quarters, and check age and body condition. If you want, list her on Pashushala and compare nearby offers. For an exact price, I need her milk yield, lactation month, age, and pregnancy status.