Below is my link to the dealings I have had with kingah. We made two trades and on one, he had my card in hand and up on the board for sale/trade before even shipping his end of the deal. I will say that I did eventually recieve my cards but he is extremely slow with getting them in the mail.
I will give the same advice as others gave me. If someone has low/little trader feedback, ask that they send first. OR since both of you have low/little feedback, ask a mod or someone who has a very good reputation on the board to be the middle man. Each of you ship your cards to him and he sends them out once he recieves both ends of the deal.
Think I may be getting scammed by a BO member.