Buy an EVGA graphics card. They are the only company that offers international warranty. However, keep in mind that claiming warranty is a tough deal because you still have to send the graphics card to Taiwan (if I am not wrong) to claim it. But, the good news is that its better than nothing. Also, EVGA makes solid build quality cards. Their chances of failure is very rare.
GTX 1080ti costs around INR 65k in India:
https://www.mdcomputers.in/gtx-1080-ti
Zotac carries 5 years warranty.
BTW, for how much are you getting it from the states? May I ask what the rest of the components look like? I am curious because I also happen to have a R5 1600 based build and I can help you with the rest of the components also.