First ebay Negative feedback!!

[The Dong]

Hehe. I'm quite surprised it took this long!

Sold a processor (AMD 3800+) which I tested before sending off.
Seller sent a message a few days after receiving goods, said it was 
faulty and that she had taken it to a local PC store who also said it 
was faulty. She also made it quite clear that the thought of having to 
send it back for a refund was a great inconvenience (leverage, I presume?)

Asked her to send it back for testing and I would refund all fees.
A full refund!
She refused, well, I say she refused, but in truth, she didn't respond 
at all, then left a Negative feedback saying I was unhelpful!

Jesus. PMT? Noooo. Scammer? Maybe...

There's a hole in my ebay bucket, my bucket, my bucket.
There's a hole in ebay's sellers bucket, a great massive hole.

Yeah, sure. I'd thought of that scam ages ago too.
It's annoying when you get caught out. I would never Neg someone that 
called my bluff though. It's a fair cop.
You know, claim all goods are not as listed, or faulty, then see if the 
seller will refund and (if they are gullible or can't be arsed) not 
bother asking for return of goods. If they do want the goods back, you 
either just keep it and go silent, damage the goods and send them back 
if you want the money, or go all rampant and ruin someone's good 
feedback like a crazy mofo and giggle like a little girl for weeks!

I am currently arguing with what is probably a computer generated 
response mechanism now to try and get the neg removed!

All because I did the right thing!
Is the right thing not always the right thing any more? ;)

Now I'm left with leaving her a positive feedback, with a negative message.

I'm not bothered about the Neg much, at least I've got the money, huh?
Unless of course there's the small matter of the buyer somehow getting 
the money back too from paypal and me being out of pocket anyway?
I bally hope not.

Any real ebay alternatives out there?