Just wanted to throw this in if it isn't already known. You can currently get a case of 288 heaters for only $20 plus shipping. I can see more than a couple of uses for these and you would never run out if you have these on hand as well as having the one that comes in each MRE. I have usually seen these for sale at surplus stores like Sunny's for $1 each so you really can't lose at this price. Their quantities are limited. My case came in standard military packaging box, reinforced with plastic stacking brackets as well.
http://www.sportsmansguide.com/cb/cb.asp?a=243478
288 count case of FRHs for $19.95 at sportsmansguide.com
The catalog number doesn't match, but it looks like the same deal. A fellow whose blog I read took advantage of this order recently. Upon receiving the shipment, it turned out that the heaters were from 1992; some were completely inactive, others barely worked. Dunno if I'd stake my money that the batch linked in this thread are any better
I think the gent in question reads these forums, so he may have more info if he sees this!
Original post about the offer:
http://commander-zero.livejournal.com/90404.html
Followup:
http://commander-zero.livejournal.com/91188.html

I think the gent in question reads these forums, so he may have more info if he sees this!
Original post about the offer:
http://commander-zero.livejournal.com/90404.html
Followup:
http://commander-zero.livejournal.com/91188.html