Rastro, you can get the "scout 7NH" (or a clone of it) for under $6 per unit here...

http://www.survivalkeychain.com/firerod.asp

I purchased a few of these for myself earlier in the year...you won't even notice it on your keychain and David Kochan (site owner) is a great guy to deal with (excellent service to the UK).

This other site also sells them (in two different sizes) for half the price that firestarters.com are asking...

http://www.cutleryshoppe.com (in the "outdoor & survival" section/page)

Steve.