Depending on the unit you settle for, dehumidifiers are really diversified when it comes to pricing. Different manufacturers have different prices and it really just comes down on what you want to go with. Small units however (especially desiccant dehumidifiers) can be as cheap as $30. Large units have a price range of $200-$2000 with industrial dehumidifiers falling on the higher end of the spectrum. You can also get dehumidifiers that give you value for money. These work perfectly for you but unlike many others, they are cheap. An example is the 70-pint Frigidaire FAD704DWD that is the best seller in Amazon.