...on drug stores or grocery? markets are very cheaper than those not sold on regular markets but only thru website, or phone. And most ( if not all) of products on market are FDA approved and seems to have similar content as others that are sold only thru contacting them directly by internet or phone. Why those are so much (2 or 3 times) expensive than regular ones when they are not even FDA approved? do we get better outcome by taking them as opposed to regular ones from, let's say, nature's bounty? Is it true that most of the products sold on regular markets get left undigested or unabsorbed? Is it really worth paying 2, 3 times more to purchase those pricy products? pls help.