Something like that. The weird part is I was able to pull the other end from my world here too - or the Transport Pad did it for me, or, uh, something. I try not to think about it too hard.

And no. The base spell is seventh-level, so only a large city's likely to have someone capable of casting the base version. Then the cost of making it permanent, making it re-customizable...

... I'll be frank, it probably cost over a million gold pieces to make. It was a gift from my Queen to reward me for success in getting the crap beaten out of me in highly specific locations so as to guide a team of heroes to go kill one of her greatest enemy's mortal servants. And before you ask, he is a LOT more evil than her. Massively so.