What specifically are your requirements? A steep zoom also means that the image sharpness will be severely compromised with even the slightest camera shake (unless the camera body comes with in-built image stabilisation of some sort).
Canon and Nikon are the pioneers, but if you give me a list of your requirements (be specific), I can suggest something good.
I guess you are staying in Chennai. In that case a visit to Richie street will give you a better bargain - and it is reliable also.
My office is just 2.0 Kms from Richie st and I can help you if you want.
But yes it is still cheap abroad You can save up to 1.5 to 2.0K I suppose, of course with seal open