Most of my items don't have an end date.... so when they sell they just stay there forever. The other difficulty is that if we don't have a very active shop, we have to pay the full monthly fee just to go in and REMOVE items that have ended or sold.

The only comment I'd make on this is as long as the items are still viewable somewhere (like closed auctions/drawings), so that if people are going back in to see the status or who won, they can still view it (or if the winner wants to view what they won, etc.)