I know when a dirty rotter did this to me, e-bay didn't charge the final seller's fee, but I did have to pay the relisting fee as e-bay said that's between me and the non-payer, so I was £14.00 out of pocket and after sending loads of e-mails, his wife just kept replying saying they couldn't afford to pay me till next month, then the next month and so on, so in the end I told them to get lost (putting it nicely) Sorry to hear this Karl, but this happens all to often, e-bay needs to remove non paying people.
Retro Andy.