I think this subject matter is worthy of a new thread.
Now, I am a firm believer that certain natural products can be found to vary between 1 and 10X the price depending on clever marketing and basically unknowns. That is, consider Bentonite Clay as another example. One might pay 10 dollars for 4oz or 5lbs. However, I did realize that the dead sea MgCl is different than the Ancient Minerals which come from that Z word I forgot. One can purchase dead sea MgCl I believe in the form of deicer at home depot for about 50 cents a pound. Thanks for the information, I didn't realize that Niagari was purified in any such way. For me, as a rule of thumb, big fancy websites dictate at least twice the price on natural (earth occur-ing) products.