A quick update on our "Mr Keten".
Paypal's investigation into my claim has concluded.
As far as I can tell he made no attempt to even try to put up a case against my Paypal claim as Paypal always copies each parties emails both ways in dispute cases.
Paypal found in my favour and is refunding my money.
If the seller's account has insufficient funds to complete the refund owed to you,
please be assured that we will take appropriate action against the seller's account,
which may include limitation of the seller's account privileges.
I think I will learn from this and not deal with this vendor again.