The page carries an 'Official Website' label in its footer. The same footer says the site may earn a commission on purchases made through links to the official Honeyfil store.
An official website is normally the brand's own store. A site that earns commission on links to the official store is normally an outside publisher. Both descriptions appear on this page, and from the text alone we cannot tell you which one fully applies.
The footer is explicit about the commission: it is paid at no extra cost to you, and the price you pay is unchanged. That is a clear disclosure, even if the 'Official Website' label makes the relationship harder to place.
It does not change what the formula is or what the guarantee says. It does mean you should confirm for yourself where your payment is going. Click through, then check the address bar, the checkout page and the name on your order confirmation. Treat anything on this site as information to verify with the seller, not as the seller's word.