27-08-2016 9:09 AM
Basic rules of seller protection: use trackable postage to send to the address on the payment.
If worried about a live listing you can always cancel:
http://offer.ebay.co.uk/ws/eBayISAPI.dll?CancelBidShow
and block:
http://offer.ebay.co.uk/ws/eBayISAPI.dll?BidderBlockLogin
You can also use this link to put a general block on buyers with a history of non-payment, etc.:
http://offer.ebay.co.uk/ws/eBayISAPI.dll?BuyerBlockPreferences
tick "Apply above settings to active and future listings" at the bottom and then submit.