Instruct: Classify the given Amazon review as either positive or negative.
Query: A 3-pack for significantly less $ than retail stores!

What a deal! I am so frustrated that I spent so much time checking stores for this filter, only to find that they were out of stock, or if I did happen to locate one, it was so overpriced compared to these! Now that I finally found a 3-pack at a great price... my humidifier started acting up and is not currently working (of course!). However, I highly recommend these filters.