Yes, I have read the forum/site suggestions, and I'm not sure if you already have a XenForo plugin for this. Is there a way for the forums to automatically lock and move threads to another subforum? If so, maybe auctions/rev. auctions/supporter auctions can be locked and moved to the auc./rev. auc./supporter auc. archives after a week w/ no bids. In the Auction rules, is states that auctions with no bids are automatically closed, and it's not very common to find an auction that ends 168 hours after the last bid.
There is not a way for this to currently occur. They are considered closed, but the process must still be completed manually by one of our Staff members. If you see one, simply report it and we will be more than happy to move it.