You got it!

Holy vessel, sunset sea,
The kirkboat in Conde Petie, and the Sea at Dusk chocograph...

Finders, keepers, I'm for free
... are places you can find it for free.

Vagrant and a fiend that flies,
Stiltzkin, and the Friendly Garuda...

You may have me for a price.
... will give it to you in return for something else (Gil in Stiltzkin's case, and the Garuda wants a Lapis Lazuli).

Your go!