When to use Cure 3 or not

[Nabician]

What shady sites are you guys getting your information from? Cure III costs 505 mana for me, 252 with Overcure active. O_o

(With those numbers, Cure III would be sitting at 2.18 potency per MP spent on a single target. Cure II is 2.44 potency per MP spent.)

I do got the same numbers has you. Dont know where they took theirs from.