This is how much magic spells cost from the lowest to the highest


E-M: 25 AM: 20 AC: 15 SC: 10 GA: 5 GM: 5 S: 5
D- M: 50 AM: 40 AC: 30 SC: 20 GA: 10 GM: 10 S: 10
C- AM: 75 AC: 60 SC: 45 GA: 30 GM: 15 S: 10
B- AM: 100 AC: 80 SC: 60 GA: 40 GM: 20 S: 10
A- AC: 100 SC: 80 GA: 60 GM: 40 S: 20
S- SC: 150 GA: 100 GM: 50 S: 25