Personal experience, March ‘08 used cans were selling for the same as scrap aluminum, about $.52 /lb. I was paid a couple hundred $ at the local scrap yard for stuff I collected.
A year ago commodity aluminum was about $1.45 according to the chart referenced below. They went below $1 Oct 08. About the time Obama proved to be a slam dunk. Today used cans are listed at around $.12 as you found out. Prices are like a yoyo. Who ever said the economy isn’t screwed up?
Commodity Aluminum charted over different time periods:
http://www.infomine.com/investment/historicalcharts/showcharts.asp?c=Aluminum
Scrap aluminum, different types listed here.
http://www.scrapindex.com/metal/usa/aluminum/index.html
I haven’t looked at other metals, they are all prolly way down. Paper, plastics, rubber, who knows what else has tanked?