Wonderful story.. I am glad we have a happy ending here. I really admire @maxtra cooperation to resolve this issue. But still this is a very curious case that deserves more investigation. The Afternic manipulation theory is the most probable explanation and a very scary one! anyone can add your domains if they are not listed at Afternic by you and then manipulate your domains prices if your domains are listed at Godaddy marketplace. I noticed that Afternic adds my domains without any verification, I know that because whois info for all my domains are private, in Sedo I need to add TXT record to verify ownership for each domain, while at Afternic I am not required to do that, how do they verify my domains without whois and without TXT record is something I always wondered about. I think they just add domains without any verification which if true is a big loophole with the size that an elephant can go through. You still need to accept Afternic's fast transfer for this loophole to work, but considering that Godaddy is Afternic and in case the buyer and seller are both at Godaddy, then there is a possibility that fast transfer is not needed in first place for the OP scenario to happen. I hope that this is not the case and i hope that @Joe Styler investigate this more and tell us if this is possible.