Received today:

Dear Dragon,

We have concluded our investigation into your case and have decided in your
favour.

We were able to recover [a sum close to but not quite the full amount], and this amount has been credited to
you. Please allow five business days for this adjustment to be posted.

If you are due any additional funds, we will make our best effort to
recover the balance from the seller.

Can’t ask for more than that really. Yes I’m out of pocket but only by the cost of a couple of rounds and a bowl of chips down the pub. It’s the price you pay for not being more careful.

Many thanks to Adrian for leaving an explanation in the comments. Cheers bud.