The 2-bottle package is priced differently from the larger tiers — worth doing the actual math before assuming it's the cheapest way to test the formula.
The 2-bottle package is $79/bottle for a 60-day supply, totaling $158 — while the 3-bottle and 6-bottle packages both include free US shipping and additional bonuses.
Since this formula's own materials describe many customers staying consistent for several weeks before results feel like a genuine habit, a 60-day supply on the smallest package covers that window closely — worth weighing that against the bonus-inclusive value of the larger packages.