Yes just to echo PP, for a faulty return you'll have to pay for the return postage too. And you'll still be charged your Final Value Fee. And you can't even leave negative feedback for buyers anymore!
eBay absolutely sucks. So many holes in the system now, it's rude with fraud.
Hopefully you'll get it back in one piece and you can re-sell elsewhere. I've been out of pocket hundreds of pounds because of CF's and fraudsters.
I used to sell cameras and camera lenses, years ago I never had an issue. Then I started getting return after return.
Buyer would purchase a brand new, boxed camera or lens from me. Receive it, use it for a week or two, then say it was faulty. It would be returned looking like shit.
Bastards would use me as a fucking free rental service and use the camera on holiday or for a special occasion and then get a refund in full. I was left with a used, battered camera worth 50% less.
Now I only accept cash on collection - no eBay, no PayPal. Just cash!