custom spell mp cost?

[Icedfate]

am I doing something wrong or is it normal for all custom spells made at the spellmaker to have double the magicka cost of an identical spell bought from a merchant?

like, for example, aldsimvi intervention has a cost of 8, if I create a custom spell with the same effect, it has a cost of 15.

rilm's cure is cure common disease, cost 15 magicka, if I create a custom spell with cure common disease, it's cost is 30.

ondusi's open door is open lock 50, it costs 15

if I make a spell with open lock 50, it costs 30 and open lock 25 costs 15.

it seems that ALL the mp costs are doubled when I make my own spells . . . and considering you get so few mp in this game . . .

[Ristretto]

From what i remember there was a way to make them cost less i think it might have just been based on the level of one of your skills but i might be wrong i havnt played the game in a long time

[Icedfate]

never mind, I looked it up . . . its because of the way the game calculates the cost as if you made the spells +1 duration more than they ctually are, and the way to get around it is to make the magnitude smaller with a higher duration to create DoTs and HoTs instead of burst damage