We got one of these a few weeks ago. Be prepared to deal with white dust unless you want to try to filter the water or use distilled water. It makes a big difference here in CO, tho. We leave it on at night only in our bedroom and it has solved our dry skin problem.
Edit: I should note, we paid 33$ at Amazon Jan 11, 2013.
I have owned mine for over a year with no indications of white dust in our house. Perhaps it's climate or tap water related where you live?