Walmart discounts a selection of Tide Laundry Detergent, with prices starting at $3.97. Opt for Site-to-Store pickup to dodge shipping fees, which add $4.97. (Alternatively, orders of $50 or more qualify for free shipping.)

Buy Now

A couple best bets:
-- Tide Simply Clean & Fresh Refreshing Breeze 138-oz. Liquid Detergent for $8.97 (low by $1)
-- Tide Plus Coldwater Clean 92-oz. Laundry Detergent for $9.87 (pictured, $12 low)