I just received my another order from Puritan today (Its I think 4th time I'm ordering from them) and my experience has been pleasant with them.
Sushil, believe me, order a few suppliments from Puritan like Calcium/Magnesium, Milk Thistle, Vitamin E & D, and they will be EVEN CHEAPER after adding shipping cost when COMPARED TO Indian prices.
Shellcal, an Indian company, which makes calcium which has 500mg calcium and just 15mg magnesium (such a low magnesium is of no value, because magnesium is hardly absorbed even from 250 or 500mg) costs around Rs 2000 INR ($20 USD), but calcium with magnesium (500mg calcium, 250mg magnesium) 300 tablets on Puritan will cost you around Rs 500 INR ($9 USD).
Granted it takes some time (now-a-days, around a month) to reach to India, but its worth it. And order items below $90-85 (including shipping) and you won't be charged any customs.
And yeah, you won't find Osteocare in India.
And sorry, I'm not experienced with that site or brand, I wish I could be of help though.
Best,
-P.