Best deal: $9.72 per gallon (55.1% below the median) — Rain-X 620191 Foaming Car Wash - 100 fl oz. High-Foaming, Concentra...
Price range: $9.72 – $79.92 per gallon across 10 offers. Median sits at $21.62.
Top brands showing: Chemical Guys, Rain, Meguiar's Gold.
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