This site states this specific figure directly alongside its 4.8/5 rating: 93% choose the 6-bottle kit.
This stat appears alongside the brand-published customer rating, without a separate link to an independent purchasing-data source on the pages reviewed — worth treating it as brand-stated context rather than an independently audited statistic.
Given the 6-bottle kit carries the lowest per-bottle price and free shipping, a high preference for that tier is a plausible outcome of the pricing structure itself, worth reading alongside — not as separate proof of product satisfaction.