Best deal: $17.97 per gallon (48.3% below the median) — Thompson’s WaterSeal Multi-Surface Waterproofer Stain, Clear, 1 Gallon
Price range: $17.97 – $66.98 per gallon across 10 offers. Median sits at $34.76.
Top brands showing: Ready Seal, Seal, Thompson's Water Seal.
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