I've seen the national property preservation companies billing my banks for the full cost of dehumidifiers. Plan on losing a few to unethical agents. About half of the units in my properties disappear and need replacement. Another trick that might help is a bag of charcoal. Slice the bag open and it will absorb the damp basement smell. After a period of time, place it in the sun for a day or so, it dries out and can be reused. Or place it in an appropriate container and dry it in an oven. Also, check dehumidifier prices from MFS supply. They also have good pricing on a lot of property preservation supplies, key sets, lock boxes, tarps, and such. Hope this helps.