The steelbook is a preorder bonus given with every anarchy edition at game.fr:
http://www.game.fr/Search/Search.asp...rage%20anarchy
I ordered the CE at game.co.uk (please, if there is any God of Gamers, i beg you, make this come undamaged, and i will sacrifice a hundred virgins for you) but it seems like the listing has disappeared, maybe someone can help you with a link as i don't find it now.
The CE cost me 32.94, shipping to France included.