There are other marketplaces too beside Sedo, Afternic. I list my domain names in Lysted.com, DomainBrothers.com, Undeveloped.com. Listing is free and commission also is lower than Sedo and Afternic. Moreover, what is special here in these three marketplaces are, you get personal guidance and a lot of support instantly. I strongly believe that we need more and more marketplace rather than always depending on Sedo and Godaddy monopoly. And if I have nice, short and brandable names, my choice is Brandbucket.com and Brandpa.com, who charge $ 10 and $ 5 respectively if they approved my domain name for listing.