This site labels two of its three packages differently — worth understanding what differentiates these two specific claims.
"Best offer: biggest discount" is a percentage-savings claim tied to the 2-bottle tier; "Most Popular" is a different kind of claim, about purchasing frequency rather than price — worth not conflating the two.
This label appears directly on the pricing card without a linked, independently verifiable purchasing-data source in the materials reviewed — worth reading it as brand-stated context rather than an audited statistic.