Kahrun armor sets they are interesting, because they have a lot of magic resistance and magical cancellation, so it may be a good option for PvP. You can bought them with “Kahrun Marks”, which players can get by doing repeatable daily/weekly quests in Tiamaranta and Sarpan
Eternal armors and shields cost:
Chest / shield – 956 Kahrun marks (each)
Pants – 717 Kahrun marks
Shoulders / Gloves / Boots – 478 Kahrun marks (each)
Also, players can first buy a fabled versions and later upgrade them to eternal versions by adding more Kahrun marks. None stat will be lost with such upgrading.
Source : Daeva’s Report