Coolcamel, you seam to be a little OTT here. First off you have bought a second hand marker, which is 3 years old. The photo's in the thread clearly show the condition of the marker to a degree. Which you have satisfied your self with before parting with your money.
So on receiving the marker you then go in to a talks with the seller. He then tries to help out and and offers you a part refund. Which you again agree to.
He has also said he has sent out the trigger and offered to refund you for the trigger if it dosent arrive. All of which seams to be very reasonable from the seller. Which i am happy with. He seams to be doing every thing to help you out.
Now i think you have recived the marker and are just not happy and want your money back. I think you need to realized your buying second hand goods.
I have spoken to cool3108 and he has said he is away at the moment, so i think that rather than keeping banging your drum you should try and work it out with the seller when he returns. As he seams more than reasonable to me.