I've been having good luck with Atom.com (previously SquadHelp) using Standard Listing. If parked at Atom, the commission drops to 7.5% for standard domains. Over the past year I found that about 2/3 of my sales were with Atom while parked with Atom with remainder of sales coming from Afternic. For a four month period, I parked all my Atom-standard names with Afternic and saw no difference in sales on Afternic, but a big decline with Atom.com sales. As a result, I park with Atom and list with both. I think a lot of Afternic sales come from domain searches (like Godaddy search) and parking with Afternic doesn't seem to give me an edge. As user biggie suggested above, I do mark up my names with Afternic since the commission is so much more at Afternic compared to Atom, especially when parked with Atom and not parked with Afternic.