maybe he is the "cardcop" in disguise and cannot walk to the PO..
anything sent to him correctly with sig conf and ins. will be declined because then he can't scam you out of it.
contact ebay as NH says... they'll let you know what is up.
the fact that we exist, in a universe of sheer randomness, is scientific proof that there are aliens.
we are the aliens.
i can say that with 100% accuracy.