What are my options?

[grayt03]

I sold an item that I had used literally 3 times.  I clearly noted that in the description.  The product worked perfectly when I tested it before shipping.  I charged the buyer a flat rate of $6.00 for shipping and it cost me $20.00 to ship it.  The buyer claims it does not work.  It was carefully packed in all original packaging, so I know it was not damaged in shipping.  Buyer is demanding a refund because she thought the item was new, and she claims it is defective.  Now I will be out for return shipping as well, which will mean I will pay more in shipping than she paid, and I have to refund her.  Are there any protections for sellers?  I won’t ever sell again on eBay —I’m just an individual hoping to make extra money by selling items I am not using.  I am not a business who can afford to lose money.  I think this user is dishonest and had buyers remorse after getting the item.  Please help!