Not there anymore, they had a fire and are not selling at the moment, always for a lookout for some spare.
I bought one in Tunisia in '80 for FF10 and 2 more in UK in 2000 for £15 from a army surplus store.
You find some in Portugal but not so cheap, they become collector items in the richer world.
Ah, but you have to read the top of the webpage where they had the fire and still haven't re-opened. And the fact the Amazon.com is out of stock and don't know if they'll get any back in or that James at the Atom website has been OOS since November of last year.