The cost of the total hip can be variable, depends on what sort of hip ball you are talking about. Bipolar hip can cost around Rs 10,000. Total hip can cost around Rs 20-25,000. But it also depends on the make, i.e the company.
These estimates are really very rough and could be erroneous. The total cost of the surgery too can vary depending on the hospital setup, doctor, perioperative services etc.
In all - it can cost anywhere between Rs 25 to 75,000. I dont know if you can get a prosthesis from here, since most of the companies have their offices in India, and one has to go through them.