Honeywell Easy to Care Top Fill Cool Moisture Humidifier for $17.46. Here is a screenshot for reference. Order online for in-store pickup to lock in the price and save on shipping. Otherwise, shipping is free on orders over $50. Its production description states that it has a self regulating evaporative system that naturally adjusts output to amount of moisture the air can hold at a particular temperature. Most places have it for about $39.