Not sure why ebay is so one sided toward the seller, but I think Steve is right. Not worth it. As you have so many other items for sale, you can't really bail right now.
BTW, the link didn't work for me, but I found the auction:
http://cgi.ebay.com/ebaymotors/NOS-PURPL...=item4ceef6ece7
Maybe that one will work.