Instruct: Classify a review into positive or negative sentiment.
Query: Very disappointed in the cheap parts of this product

I bought two of these purifiers after watching a tv program. I was really surprised to find how cheap all the parts are for something that costs several hundred dollars (that's what I paid when I purchase it). It worked pretty well for the first few months but after I rinsed it (exactly according to directions), it started to crackle. I called Oreck and they said it crackles when something gets lodged in there. I wonder why it didn't do it for ths first few months. Overall, I'm very disappointed with this product and will never buy another Oreck again.