Product review (2 stars): Over priced.
The price was completely out of alignment. I had ordered the exact same product a few months before at the same price but the quantity was 2. This time around I simply reordered it but found the price stayed the same but the quantity was now 1. The KAZ humidifier itself costs about $30, so I can't see paying $10 per filter, with about two to three filters per  winter season.