It could be useful to have a small portion of the room NOT reset, such as a room inside the room. Although if a dm wanted to save some nice items, they could just pick it up and put it down after the reset, but still, it could have some use maybe. .
The Scorn Sale Shop is now available on crossfire.metalforge.net server
Basically, the map does not reset so the items dropped/sold here will remain there until purchased by another player or the map is cleared out by other means.