Gym supplements ? There is no such thing. Even supplements is spelled wrong. Why are you so casual as if you are on Whatsapp.
Coming to topic, Healthkart has authentic products on sale.
ON is good in-fact very good, but over-rated.
I have tried local branded proteins from BigMuscles and saw good results. You can go with Saputo unflavoured Whey, buy large pack at dirt cheap prices locally.
Nothing beats eggs though, 3 eggs = 24~ gram protein/1 scoop whey, dirt cheap @ Rs. 13~
I eat 8 eggs, lots of nuts, plenty of water, random fruit/carrot/beetroot/cane juice, and bucket loads of homemade butter. My diet is rich in fats and protein, very less carbs. My very own personalized Paleo diet. I lost 20KGs and gained muscle mass at same time, body re-composition.