Xiaomi has launched Mi TV 70" for just Rs.51,000/- as per this post. It has a Sharp 4K panel and has all the features that you should expect. Check out before you buy anything Xiaomi launches Mi TV 3 with a 70-inch 4K display - diunix
I happened to visit a Xiomi store in HK and saw their LED Tvs, their prices are awesome, and they also give a sound bar with their TVs. I think price of a 4K 55inch TV there was around 40K INR. Would love them to introduce their TVs in India.
My experience with Note 3G and Redmi 2 prime has been excellent for the price. I would also be interested if introduced in India provided the after sales and the quality are upto the mark for the price. But for now this is only academic discussion.