Product review (5 stars): A little pricey for what it is, but it does the job correctly
It's definitely overpriced for what it is, but Amazon has one of the best prices on it. And if you have a leak in your original (that is inside the fridge) then this is a needed part.
Before I bought this genuine part I tried to save a few bucks and just replace the tubing, reusing the molded black part. The two parts are glued together but I assumed I could just shove a new tube through the old black part and it would hold it in place. The problem with that was the white tubing allows water to freeze in it if it's inside the freezer, the black (more foam like part) doesn't and it seals nicely. So this part is necessary for repair.
However if you have a leak that is outside of the fridge you could repair with a push fit connector and save $.