Amazon offers the Persil ProClean Liquid Laundry Soap 75-oz. 2-Pack (150-oz. total) for $14.99. Order via Subscribe & Save to drop that to $14.24 and bag free shipping. That's $1 under our April mention, $7 off list, and the lowest price we could find. (For further comparison, it's just $4 more than what others charge for only 100-oz.)