Product review (5 stars): Can't beat it for the price
The first time i needed to replace my water filter, I went to my local (national chain) hardware store and purchased ONE for around $30-35.  Needless to say, I was a bit irritated when I found the exact same ones for 75% of the cost.  I now buy these once a year and change them out after 6 months.  I've never had an issue with any of the ones I have purchased.