Ravinia
<Crow Coin Exchange>
Ravinia is the NPC that allows you to spend Crow Coins obtained from level 5 Bartering. Her Crow Coin Shop is located on Crow’s Nest, an island in Ross Sea.
Ravinia has a line of Sailing quests that will give you half of many of the materials for upgrading Epheria Sailboat/Frigate to Caravel/Galleass.
where can i see that npc
You can’t see her because the island is on the part of the map where u need a compass.
To get to her get between Timberra and Lerao and go North… you can see the island. From Port continue North trough the cave she is in front of a door. If you do the Crows nest quest line you will find her and the rest of the NPC on that area.