The price is clear. The value is harder to verify.
By our arithmetic from the page's prices and supply labels, the cost is about $2.63 a day before shipping on the 2-bottle package, about $1.97 on the 3-bottle package and about $1.63 on the 6-bottle bundle, assuming you finish the supply.
Whether the label shows amounts, whether the refund terms are clear and whether you will log honestly for 60 days. The page's conflicting reference prices are a reason to ignore them and judge by the actual price. A product with an easy refund costs less to test than the sticker price suggests.