"Quickly, leave now." That was the command he gave the operator of the Sea Train. Using his status within this world as the only payment. As even if being a Rear Admiral alone wasn't enough the World Government, or just Marines, would handle the expensive. Mainly because he was coming to see them and not some pleasure trip to another place.

Heading to Enies Lobby
Cost = 0
Using the Rear Admiral perk to freely travel to One of the main Marine hubs.
Waiting the rest of the time