Best deal: $17.97 per gallon (61.2% below the median) — Thompson’s WaterSeal Multi-Surface Waterproofer Stain, Clear, 1 Gallon
Price range: $17.97 – $3,888.64 per gallon across 58 offers. Median sits at $46.32.
Top brands showing: Thompson Water Seal, Saver Systems Deck, Ready Seal.
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