Amazon has the 146oz Tide 100-Load HE Compatible Liquid Laundry Detergent (Original) for $18 - $3 off coupon (check "Save an extra" box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel at any time) = $14 with free shipping on $35+ or with Prime. Ultra Oxi and Free & Gentle are also on sale for $16.