Lich is better/more expensive than Master Lich?

Also note the physical stats of the Lich compared to the Master Lich. While both are unimpressive, the real catcher is:

Master Lich = 5 HP
Lich = 30 HP

A noticable difference and can make for quite an impact in some circumstances. Especially artillery type of spells and battlefield spells (Solar Brilliance)