Product review (3 stars): Go to hhregg
I have not bought this item but need to.  After reading many reviews and searching around, I'm a bit skeptical about purchasing this filter online, only because of what people are saying about getting the correct model filter or possibly getting a knockoff.  I did find this filter at hhgregg.com and they have it (one filter pack) in stock at the local store for only $29.99, which is the best price I've seen anywhere, even online.  Then I can look at the filter to make sure it is the model I want and make sure it matches the model I have.  If you have an hhgregg store near by I recommend you go there first