In general, your average desktop humidor will cost around $150. Humidors can vary greatly in price, depending on the size and type you're looking for. A cheap humidor with a single shelf will usually cost around $30 to $50. On the other hand, a large humidor that would work great as an extra storage place for cigars might set you back more than five hundred dollars. Be sure to do your research and make a decision based on your budget.