The auction houses in City of Heroes are currently not running. This change coincided with the release of Issue 17: Dark Mirror, which coincidentally introduced a new user interface for auctions. The Known Bugs release notes for Issue 17 indicate that the auction houses they will be offline until further notice.Now, this is going to cause some pretty significant, if short-lived, follow-on effects for the game.
For some players, the inability to sell certain Salvage artifacts for millions of Influence points will be unacceptable - they will refuse to play until it is fixed. Others will continue to play but attempt to hoard their Salvage for later, eventually running out of space (though extra space can be purchased in supergroup bases). Others will compromise and sell their Salvage at ordinary shops for vastly deflated prices. Once the auction houses come back up, there will be less Salvage available in general, so the prices will tend to be much higher than they were at the beginning of the trading pause.
Mokalus of Borg
PS - I do hope it's back up soon.
PPS - The improved auction user interface does look pretty good.