PO BOX - question re Paypal

Hi all,



I am about to post off a parcel to Qld which my husband sold under his own ID and the only address I have is a Post Office Box. We checked the winner's details and they only have a PO Box. 



I was under the impression that it had to be a street address for parcels to be delivered and if not that Paypal does not cover any losses.



Could someone please confirm for me before I send.



Many thanks,


Di