it's good to be listed on afternic, but I wouldn't park it there. don't know if their ppc pays anything
but I would also have it listed and maybe parked between these two > sedo or internettraffic, just to see if any conversion on the traffic.
and you could still entertain offers via the "this domain may be for sale" option.
i think in order to get max roi, you have to know traffic if any and conversion rates.
imo….