Best deal: $17.97 per gallon (66.7% below the median) — Thompson’s WaterSeal Multi-Surface Waterproofer Stain, Clear, 1 Gallon
Price range: $17.97 – $1,500.06 per gallon across 51 offers. Median sits at $53.93.
Top brands showing: Liquid Rubber, Rust, Kilz Over.
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