The middle package tier is worth examining specifically — sometimes it's a genuine sweet spot, sometimes it's simply positioned that way in marketing.
Calculate the true per-day cost for all three package sizes rather than trusting a "best value" label alone — the math sometimes favors a different tier than the one marketed that way.
Whether the package size gives you enough supply to meet the 30-day minimum use requirement for the guarantee, plus a reasonable buffer for shipping time.
Backed by a 60-day guarantee (30-day minimum use required).
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