watershed innovations hydratarp 20 ft. x 30 ft. premium heavy duty waterproof tarp - 18mil thick - white/brown reversible tarp with d-rings 20ft x 30ft is up for auction in Patio, Lawn & Garden. The current bid is $1.50, 98% below the $67.87 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.