Sam can get those items just fine.  A schema of teleportation can also be acquired, although you still have to face the entire 25% markup thing.  Dimensional anchor is also one of the most common rituals used to ward an area for a long period of time, although it's not nearly as common as Leomund's Secure Shelter, which is cast basically everywhere that's owned by the government.  (mostly because of the efforts that the Royal Eyes of Aundair and the Trust of Zilargo make to scry everything of interest to them at all times)