Yeah look, im really sorry, but i agree with your buyer on this one. Not really *ripping* people off, but not being an honest seller either.
You sold it for a minor mark up, yes, but if i had got an item with a lesser priced tag on it then what i had paid, I wouldnt be happy either.

I thought the feedback left, was in relation to the purchase, so you are very lucky if she revises it. I probably wouldnt have revised it though.
Them's the breaks!   ;\