kinda wondering if something might be missing in the spell duration modifier
it skips from 10min/lvl with a price mod of x1.5 to 24 hour+ at 1/2 price
so where do spells like ant haul that has a 2hour/lvl duration fall.
it looked to me like hour/lvl duration would be the intended base and so have a mod of x1
but that just an idea