If it was the laptop, it was offered for auction at $50 postage.   From the OP's posts, I gather he is willing to refund any excess postage after payment.  

There is no offer for pickup.   I don't know what the buyer is playing at.

The good news is there were plenty of bids.    Open a non-paying dispute.   Wait 4 days.   Close dispute.   Offer it to the second bidder.