I'm more inclined, from a developer perspective, to think that there hasn't been enough financial successes with auction sites to provide enough viability to create the extra plugins or themes for auctions. ;)
In other words - the people who have been trying have not been successful enough to continue - there's not enough product viability.
These forums were CLOSED to new posts on November 19th, 2012. New forums are here: http://www.studiopress.com/forums/
and you will need to SIGN UP AGAIN.
If you need assitance with setting up your theme, go to http://my.studiopress.com/
and read the SETUP links or the TUTORIALS link on the side tab.
If you need Account Assistance
, file a help desk ticket at the same location.