Thank you tubalcain for the video. Certainly the importance of industrial metals will be evident when rebuilding after a long-term post-cataclysmic event, but I thought I might mention a few currency & barter items that would be in HUGE DEMAND days after any system wide shut-down:
#1,2, & 3: PRESCRIPTION NARCOTICS I am sorry to say, but a sizable percentage of the US population (I'd say 10-20%) is completely dependent on the likes of vicodin, percocet, etc...Let some people go a day without them and they go nuts. Easy to sell on the street and even non-addicts (read:gangstaz) understand their value. Entire swathes of our subculture already lock them up for use as currency. To a lesser extent your anxiety drugs also apply- Valium, Ativan, Xanax, etc....It is an unfortunate by-product of a soft population with poor pain coping skills and the lack of understanding that pain, both physical and emotional, is simply part of life and has been and will for eons.
#4 Antibiotics- cipro, doxycycline, and keflex come to mind. Those three alone will treat 90% of all common infections -pneumonia, skin infections, sinus, etc... and are dirt cheap.....for now.
#5 Insulin. 20 million diabetics. 'nuff said. VERY short shelf life tho.
#6 E.D. Drugs- Viagra, Cialis, Levitra. You'd be surprised.....
Just my input from the medical corner.