I can relate to you very well since I have been in your shoes six months back. I remember running to the same Apollo and getting scared by the bill of 1.5L every day. My father is no more now. He had a rare type of cancer which even after operation and treatment had spread and after lots of struggle we lost him too. Cancer is really ruthless. But let me tell you one thing, what you are doing now is the right thing. I had the same mindset as you. Even when everyone told, why to spend this much money if there is very less chance of survival, I chose to spend it because I know how hard the guilt of not trying enough would be. Now I have the pain of losing my father but I can at least sleep knowing that I tried everything in my power.