Providing you've got proof of postage and/or the signature obtained upon delivery the only claim would be "Not as described" and I'm not sure how someone could claim it was 179 days before they noticed it wasn't as described without PayPal suspecting something fishy. The concept of retaining evidence for half a year would be mind boggling for the casual seller as opposed to any business which would keep receipts as a matter of course. So the question for them is how they store the evidence of delivery. Does the PO keep signatures for 6 months or is it less?As to the 180 day ruling, Paypal would adopt the same attitude as with something bought the day before - and then decide in favour of the buyer. Taken from RM website "Claims for loss must be made within 80 calendar days of the date of posting, or no claim will be entertained. Royal Mail has no legal liability for any loss if at the time of the claim 80 days has expired from the date of posting. Royal Mail advises customers to claim as soon as possible after an event has occurred to enable enquiries to be made promptly." Basically your f****d