I think you will struggle to find this part in India. It is discontinued - replaced by the Quadro 4000 for Mac - and from what I have heard over the years about Mac component supplies in India you are better sourcing such an item from Oakley Sunglasses Canada abroad if you really want it.

I suggest you also read the latest article over at barefeats.com on the Quadro 4000 for Mac Pro as it clearly highlights that there are no optimised Quadro drivers for OS X like you might expect. So if you just wanted the most powerful overall card for OS X, rather than needing CUDA or wanting to use it for traditional 3D applications under another OS, then go with the Radeon 5870. The Radeon 5770 and 4870 as well as the GeForce 285 are also better.