You can also set 3 Favourite Crystals. Teleporting to those will only cost half the money it normally would.

As for more expensive teleporting, I don't know about that. Money does not come easy in this game, if you have done all the quests there are. From there on it is 3 guild leves every 8 hours or something like that. We will have to see how it develops when more people have reached max. level.