In the Closed/Unsold section of their My Auctions page, sellers will see the Add Similar Item button at the far right of each item next to the relist button.

Clicking on the Add Similar Item button will bring the user to the beginning of the Post Auction process, and all the values will be pre-filled with the values from the auction you have selected. This can be useful if a user wants to post a new auction that is not quite the same as one of their closed auctions. The Add Similar Item feature is a similar process to the Relist feature, except that the user will be able to edit every field and they will always be charged the appropriate fees for listing an auction.