Product review (1 stars): The cost on this item is OUTRAGEOUS
It is a charcoal filter!  I think I am going to talk to a buddy of mine who has manufacturing done in China.  The cost of this thing is what $1 (probably 25 cents before overhead, shipping etc.)

The only thing more OUTRAGEOUS is the shipping.  They charge you $9.95 and it takes over a week to get to you.  How do they justify the shipping???? They put a filter that is the size of large Champagne cork in a 6"x6"x6" box...  What a joke!

Buy it if you have to...I did because mine cracked and I could not REFILL it.  Yes that is right save yourself $39.99 and refill it.  You will see how easy (cheap manufacturing) it is.  Take a cardboard cutter and cut the top off; dump out the charcoal and discard the paper; buy some activated charcoal(pet stores or aquarium supplies); put the charcoal with the coffee filter (it replaces the discarded paper) back in the plastic container and glue or tape the top back on.