The current price of a Sur Rune is 10 - 17 fg (d2jsp forum gold) and the equivalent in rune value is 3x Ist - 9x Ist.
Rune Information
Sur RuneCan be Inserted into Socketed ItemsWeapons: Hit Blinds TargetArmors: Increase Maximum Mana 5%Helms: Increase Maximum Mana 5%Shield: +50 to ManaRequired Level: 61