These related Help pages may answer your question:

• If my item doesn't sell and I want to relist it, do I have to pay the Insertion Fee again?
  If you list an item and it doesn't sell, or if your buyer doesn't pay, you might qualify for a credit by relisting the item. To learn if you qualify for an Insertion Fee credit, click the link above . . . .
• How can I request a Final Value Fee credit?
  After filing an Unpaid Item dispute, you can request a Final Value Fee credit. For specific instructions on requesting a Final Value Fee credit, click the link above. . .
• Is relisting an unsold item free?
  Usually Insertion Fees are non-refundable, but if your item ended without a winning bidder or your winning bidder didn't pay, you might qualify for a credit by relisting the item. To learn if you qualify for an Insertion Fee credit, click the link above . . . .