Hey Neelesh, After reaching Tosh village, hike to the end of the village. There is a cafe at the top from where the view is very nice ( I actually forgot the name ). You can get a room in Rs 500-700 for two persons there. Happy travelling!!!!!!!
There are many budget hotels and guest houses available.. U can check it via any booking sites or if you still want the much cheaper one.. U can go there.. walk more to off centre and bargain for the stay
I suggest you to ask the locals because some of the places there don't even have names. And keep searching, prices may go down further. We were 8 people and got 2 perfect rooms in just 1600₹.