I believe the archive is available to all. It hides the selected assets from view, helping to organize your pages. The assets remain stored, and are still loaded up every time you open the game, which can slow your system down. The Transmogrifier is a better way of storing things, but it is a Pro-level perk. If your subscription ends, you can still access everything you've previously built (except DL layer, and similar benefits), you just can't add anything else until you re-subscribe.