....
What happened? I didn't even use much of this year old cartridge (think
it had 3/4th of ink left). I don't have its original packaging and
papers. Can I RMA it back to HP for free since I ordered it online
through Amazon?
....

I ordered it on 11/26/2012 from http://amazon.com/gp/product/B0006BB6Z6/
web page (Amazon LLC, not the other resellers). It is not returnable
after a month.
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