Eau du Fier is a tough find. In fact, I've only seen it on Ebay occasionally or someone trying to offload it on the Basenotes marketplace. Though, I haven't seen one for sale in years. Not to say one won't pop up, but you might have to be patient for a while.
May I suggest, if you want to smell like a campfire, here's a few suggestions that are more easily available:
Patchouli 24 by Le Labo
Essences of John Galliano by Diptyque