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I wonder what is costs to produce each one.

.19c vs .10c for the old one but they will last 2.5 times longer. And the polymer and is from Australia. source http://calgary.ctv.ca/servlet/an/local/CTVNews/20110620/boc-...

Because I had to check the link myself... The costs are 19c and 10c respectively, or $0.19 and $0.10. 0.10c would be pretty cheap.