you just put something new in it. This was a response to a request people had for a while. it is just a ghost image of the item that was previously in it. Since prices on boxes stay the same unless changed, no matter what goes into it, knowing which box to refill with what is helpful for some of us. And with the new SDB search abilities on other sites, it is nice to see that yes the item WAS there it is just sold out {sometimes the searches find items for sale in SDB in houses rather than towers, it is annoying}