Product review (5 stars): Amazon has the best deals!
I needed a replacement filter for my fridge to stop the digital screen from flashing its irritating reminder at me.  I looked in several "big box" stores in my area, and their prices for a filter seemed way too steep.  I went to Amazon hoping for better deals, and found this product after a bit of searching.  It's approved for use in my brand/model of fridge, and was nearly half the price of the brick-and-mortar competitors!  Have had it in place for nearly two months, and no complaints at all.