As I was afraid, I woke up this morning and my $39 "1 month featured" listing is no longer "featured". It appears it was "featured" for a grand total of about 12 hours, so it's $3/hour, most of which was in the middle of the night for Europe, Sedo's main userbase. Got a grand total of ~1~ offer, at less than 1% of my asking price.
I would have to say at this point the "featured" listing is NOT worth anything close to $39, and the description of the offer is VERY misleading. It should clearly state that your name will be featured for 12 HOURS, in the middle of the night!