WalMart sells Sunbeam humidifiers on their website and prices range from around $20 to $100, as of 2015. WalMart also sells filters for Sunbeam humidifiers which range from $7 to $17.
The Sunbeam Cool Mist Humidifier is one of the most affordable options at WalMart. It has a score of 4 out of 5 stars, and it has an enhanced filtering system. The tank has a 24-hour cycle and a filter check monitor; reviews state that it is easy to clean. Sunbeam also manufactures warm mist humidifiers for the same price, but reviews at WalMart's website are a bit lower than the cool mist option, with 3.5 out of 5 stars. Reviews show that 65 percent of buyers would recommend the warm mist humidifier to a friend.