I have the X230 Tablet which was bought used last Feb from ebay US. It has been trouble-free so far (totally 3 years old), & is overall a good device.
I have also availed of warranty services for the same & had no trouble whatsoever. In fact, the support was truly praiseworthy. All that was required was the serial no. & I had Lenovo support at my door, ready with a replacement screen. (There was a small white spot on the screen which was nothing more than an irritant, caused probably due to mishandling by the seller or myself).
However, be sure to check what warranty cover the original purchaser has opted for, as I'm sure there will probably be a few different grades.
Also, I hope someone is carrying it across the border for you, because getting used electronics shipped directly to India is not allowed.