You could keep a look out at the following online HDS AD's (these are the one's I remember before I lost all of my bookmarks when my LapTop crashed a month or so ago) ...
GoingGear
BateryStation
RussUniqueTitanitum
PreperationHQ
In Europe:
Luxtrail
and another where I bought mine from, but can't remember the store ... Flashlight something or the other.
I'm sure (or hope) a few will list other sources.
You can keep a close watch at the MarketPlace, or place a WTB thread in the MarketPlace.