you need to give anythign at least 7 working days, unless its next day delivery or 1st class recoded delviery before the weekend.
ask the seller to scan or even do a close clear photo of the supposed ticket
jesues 3 years since this happened.
well its basically in your court , and with this i mean you need to take the seller to small claims, and you could legally get the adress and contact details and any detaisl paypal has of the seller from them via the court .
tell paypal to give you the phone number to the department that is dealign with the issue , and again if paypal are infact being neglegent according to their contract you signed up with when you jouend paypal and the fact they have a policy up for protection, go via the court and even sue paypal for neglect i think its called.