To be eligible for Paypal Seller Protection, you need a receipt from the
post office with the date and buyer's postcode on it for proof of
postage which is on the till receipt for parcels over 500grams
The seller isn't obliged to refund for carrier error.....the seller is
responsible to deliver to the carrier then the carrier assumes
responsibility from that point on. The onus to insure lays with the
buyer not the seller and if the seller has proof...