Instruct: Classify the given review as either positive or negative.
Query: Cost too much

I bought this and turned it on. Within a couple of weeks..less than a month, the red light came on indicating it needed a new filter. I opened it up to find it had 2 filters. The filters are over $11 dollars each. If you purchase this, go ahead and order the filters. You will be needing them soon. And I didnt notice that it did much. Very disappointing.