Amazon has the 140oz Arm & Hammer Sensitive Skin Free & Clear Liquid Laundry Detergent (140 Loads) on sale for $12.19 - 25% off coupon (check "Save an extra" box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel anytime) = $8.53 with free shipping on $35+ or with Prime. Roughly 6 cents per laundry load.