If you are happy with the grease then its fine. I think I used grease twice for chain. My observation was that each time it was very difficult to clean it afterwards, and the dust gets stick to it too soon.
PSO gear oil GL-4 EP140 310/ltr (plastic can).
In GL-4 there is also EP85w-140 but I can not get its price form their online catalog
They also have multi grade gear oil EP 85w-140, EP 80w-90 in GL-5 range but the quoted prices were for drums.
ZIC gear oil 1ltr is of Rs 450 approx. I think its synthetic.
I had 1ltr bottle of Total (white color) but I have forgotten its price as I purchased it more then a year ago. I think it was around 250.