In Spell Law II, and Express Additions 16, the Runemage is listed as having a cost of 1/2/2 for Runes. This would make sense considering what the profession is, but I think it is the only 3 cost skill in the game, and I vaguely recall from originally working on Rolemaster Classic that it wasn't going to have any.
If that is true, then might be a good time to change it before Spell Law II goes into hard copy.