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 on the 2-bottle package and about $1.63 a day on the 6-bottle bundle, assuming you finish the supply.
Free shipping is advertised.
Whether the label shows the amounts, whether the refund terms are clear and whether you will log honestly for 60 days. A product with an easy refund costs less to test than the sticker price suggests.