[Unchained] Dynamic item creation

[Darkon]

I have now read and quite like most of Pathfinder Unchained, however the Dynamic item creation, while it looks great, leave me with a major question. Namely, with the cost reductions that occur from challenges, do they have multiplicative or additive stacking, and can they go negative?

I am inclined to lean toward additive stacking, with the potential to go negative, however with 40 challenges on higher level items, it seems to me like a high skilled party could group up when making a single expensive item and gain several hundred thousand gold without even selling the item.

[Trekkie90909]

You neglected to read the part where an item cost can never go below 25% of the base price...

As far as additive vs multiplicative; it's all off the base cost, so additive.

[Darkon]

Ah yes, missed that, It should probably also be in the paying for the item section for clarity however