Invoices are generated mainly by the actions of the member (seller or buyer). * If you upgrade your membership from Free Basic to Verified, Gold, or Trusted – see FEEs page for details. * If you choose any Advanced Special Features for ANY listing – see FEEs page for details. * If you list/post an Auction – see FEEs page for details. * If you accept an “offer to buy” or if a buyer accepts your “offer to sell” – see FAQs on Classifieds & E-Z ads. * If an Auction or Offers Only ad closes with a winning bid/offer.