:talk:
just my own opinion and your margins are certainly your biz
however, I see these sales as nothing more than a marketing strategy for the website these names are being auctioned on, and no so much about whether the names resell higher than acquisition costs.
the evidence of that premise, lies in the willingness to accept/risk a loss on the resell of any specific "premium domain name" by continuing to offer without reserve, in an effort to draw visitors, bidders and give impression that that site is "THE" place to list.
while it does propel you and the site in the limelight quite often, that model is quite contrary to the basic principles of domain profiteering.
how long you/them continue to offer without reserve... without increasing lateral profit centers like listing fee's, commissions, etc., will determine your ability to sustain that model.
however, a positive residual effect has been he increasing offer amounts for .info
Good Luck!