Walgreens offers the OxiClean HD Laundry Detergent 40-oz. Bottle in Sparkling Fresh for $3.99. Clip the $3 off coupon on the product page to drop that to 99 cents. Choose ship-to-store pickup to avoid the $5.99 shipping fee. That's about $4 less than you could expect to pay for a similar-sized bottle in other local stores. It allows for up 26 loads.