If you've got any military bases close by, you've probably got surplus stores too. Try there. I once bought a pilots survival vest (that missed being de-milled) that was complete (it still had the drugs in it). The package was a pretty complete survival kit all by itself. I weeded out the stuff that could get me in serious trouble (heavy duty pain killers) and as things expired, replaced them as best I could, and still have it to this day, although most of the gear has been duplicated in my "USE" kit, I keep it around for conversation and as a last ditch "back-up". There's no way I'd have ever found this through a mail-order/web retailer. If you have a surplus store that's getting their supply direct from the source, you'll be surprised at some of the stuff you'll find on the shelf.
Troy
P.S. It doesn't hurt to get on the friendly side of the person behind the counter either <img src="/images/graemlins/wink.gif" alt="" /> <img src="/images/graemlins/smirk.gif" alt="" />.