Thumb Score: +39 Amazon has 80oz. Drano Max Gel Drain Clog Remover and Cleaner for $6.43. Shipping is free with Prime or on orders $25+. Thanks scotts8724 Note, in stock on November 21, 2020. Deal Editor's Notes & Price Research: [LIST][*]Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.