I agree with rhm - you got your money back painlessly, just drop it. You are not injured in any tangible way; pissed is not injured. Not to justify the seller in any way, but there's little you can do without stepping down to his level and perhaps beginning a war.
Take it and move on.
What parts are you looking for, anyway? Lot's of good folks here who have stuff to pass on to those who will use it.