Best deal: $17.97 per gallon (68.8% below the median) — Thompson’s WaterSeal Multi-Surface Waterproofer Stain, Clear, 1 Gallon
Price range: $17.97 – $422.27 per gallon across 47 offers. Median sits at $57.66.
Top brands showing: Rust, Liquid Rubber, Kilz Over.
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