I find it more than a bit ridiculous that Pur charges 27 dollars for their product and 20 - 25 dollars for their replacement filters. I have owned 3 Pur sink mounted water filters and every one of them has ended up in the garbage within the first year of use. Why? Because they begin to leak at the faucet connection and this leak grows progressively worse over time. Tightening the unit does not help and in fact may make the leak worse. Removing and reinstalling the unit does not help. I have become so frustrated by Pur water products that I will never again purchase anything made by them. I just installed a Brita filter on my sink a couple of days ago and no problems yet and even if any do occur the Brita is more reasonably priced and in fact cheaper for the sink mounted unit. Do yourself a favor and avoid this over-priced piece of junk at all costs.