From The Mana World
Mass transit allows players to move quickly between the major kingdoms in the world (and perhaps to some landmarks too). The transit systems include caravans, ships, and (possibly) railways or airships.
The cost of mass transit is something players should be able to pay pretty easily, perhaps around 200 gold.
The time it takes to travel depends on the type of travel used. Some (airships) are a bit faster, while others (caravans) may take an entire day in game time.