Walmart offers the Sunbeam Cool Mist Humidifier, model no. SCM1100-WM, for $9.88. Opt for in-store pickup to avoid the $4.97 shipping charge. That's $8 under our January mention, the best deal now by $22, and the lowest price we've seen. It features a triple-layer filter enhanced with Arm & Hammer Baking Soda, filter check monitor, and compartment for aromatherapy tablets.