It could be but I've been in touch with them and explained that i feel they've left it way too late to get in touch, it's simply not fair to ask for a refund after 5 months especially as there's nothing I can do about it now even if it was tracked. 

180 days for a paypal purchase is crazy unless pp want to cover the cost which is highly unlikely.

Ebay seems to have lost it's appeal to me, it's heavily weighted towards the buyer , it should not be possible to raise a dispute and ask for a refund after 5 months.