Tracking, confirmation, and the name and phone of their post office of the post master that would confirm the package was in a bin awaiting his pickup. He was trying to play the "I didn't get it, refund me now" bit, then pick it up after the refund. The post master said he had several packages, so I assume he was doing this to others as well. When I pushed back he waited until the very last day, phoned them and filed a claim which they immediately refunded him. Took three calls for EBay to give me the money back.