Amazon offers the the Dove Men+Care 25.4-oz. 2-in-1 Shampoo and Conditioner in Fresh Clean for $3.99. Order via Subscribe & Save to cut it to $3.79 and bag free shipping. That's $1 under our mention from last month and the lowest total price we could find by $6. (For further comparison, Walmart charges about this much for a bottle half this size; you'd pay about $6 for one this big.)
Be sure to cancel Subscribe & Save once your order ships or you'll be billed for subsequent shipments.