Anyone had problems with lyonesse9 on ebay?

Sold a couple of graded cards to lyonesse9 on ebay and posted them on the 12th of Dec. According to Australian Post they believe he received otherwise they would of been returned by now because I put my return address on the back. He did not pay for registered post so it was sent in an Australia Post bubble mailer.
After reading Paypals seller polities closely I'm starting to think that he received but he knows the policies well, he brought both individually and I posted together according to Paypal I'm not covered because they should of been posted separately.
I would like to know if anyone on here has had similar problems with this buyer/seller.

Dont you just hate these lowlives that get on here and RIP us off and go on their way,their should be some sought of feedback we can lookat to pick these mongrels out and asshole'm, Cheers,Greg feel for you mate,ive been taken for a few $$$ on feebay, Good Luck

Wow Paypal wrapped up their investigation in 4 days in my favour. Thought it was going to drag on for some time. If selling on ebay make sure you read the seller's protection very carefully to prevent people trying to rout the system.
It's such a great hobby to have (made even better by this fantastic site) but there's always some idiots that try and rip people off.
What I don't like about ebay is the fact you can check peoples feedback scores but what you can't see is the transactions that have ended up in strikes against their name and for what reasons. I have resorted in some cases not closing a case in my favour and getting credit back from ebay just so I can leave feedback on their account to warn others, happy to take a loss of a few bucks to save others from been ripped off as well.
Thanks for the reply Greg.