The current price of a Jah Rune is 25 - 27 fg (d2jsp forum gold) and the equivalent in rune value is 5x Ist - 9x Ist.
Rune Information
Jah RuneCan be Inserted into Socketed ItemsWeapons: Ignore Target's DefenseArmors: Increase Maximum Life 5%Helms: Increase Maximum Life 5%Shield: +50 to LifeRequired Level: 65