I think we figured out we are doing wrong with spell book building...
Asyran Cleric costs 5 mana, but only ONE of my 120 to put in a Priestess book, with 6 copies max of that particular spell.
is that more accurate?
we were actually using the Mana cost as the spell point cost...
Correct. Spell levels range from 1-6.
Then, double check your trainings if you werent.
If you are trained in the spells school, it costs 1 point per level.
If you are not trained in the school it costs 2 points level.
In specific cases, some mages have schools are card types that cost them 3 per level.
So the Priestess pays the level cost for holy, and double for non holy. But her mage card specifies that she pays triple for Dark spells.
So a Cleric costs her 1, but a Firebrand Imp costs 3.
Also, if the spell is Novice, then you are always considered "trained" regardless.