[quote=Titanic]
Would how about 30, 23 are just people with basic healing knowledge, nothing else. 7 are like average combat magicians compared to the rest of the world. When you said rare I didn't think they were that rare.
[/quote]

30 are too many. How many magicians are there in middle earth? Gandalf, Saruman, Sauron, Galadriel... There are a few more, but they're not institutionalized, they're unique and legendary. A handful (max) per nation is adequate, like the 7 combat magicians (who could also have healing abilities).