How does Pathfinder handle multiple percentage increase or decreases? I know with multiplication, two doubles is a triple instead of a quadruple.
If two effects, that for sure stack, were to raise the price of something by 10% and 10% - would that be 20%? or 10% and then 10% more of the new price (like real life)? IE: 100gp item. + 10% is 110 + 10% is 121 OR 100 + 20% is 120.
Thanks.