Read all about it here, on J&L's site:
http://www.jlaquatics.com/phpstore/s..._ID=plb-opti03
It costs $44.95 plus taxes and shipping from them, so probably close to $60 total.
Never been opened, I had two before, but found the media to small for my big reactor (custom made 18 inch tall one
), and I want $35 plus shipping for it.
The big plus with this media is that you can recharge it up to about 5 times, and it is easy to recharge.
