Product review (4 stars): Nice buy!
I've been buying single-packs of another brand at Best Buy for years, but they recently stopped carrying them (at least in the stores in my area). I was a bit skeptical of this item when I ordered, as this almost seems too low of a price. But the cartridges are of similar quality to the ones I had been paying the equivalent of 4X more for, and they seem to be working fine. The water coming from our KitchenAid fridge water unit tastes the same as it always has with the prior more-expensive cartridges I was buying. I'll be repurchasing these.