The Storm of Insurrection
Players may either purchase or craft customized magic items based on existing magic item bonuses. The player may select bonuses using the magic items formulae.
The DC to craft or purchase an item is based upon the level of the bonuses involved.
To craft items is…
DC 10 + Bonus Level
to purchase an item
DC 5 + Bonus Level
To purchase an item, you use Diplomacy, Bluff, or Intimidate. You gain bonuses and penalties based on the size of the community where you are looking. The cost of customizing items may involve a waiting period measured in days equal to 3d6 plus the bonus level of the item.
As for the impact of the check, the DM rolls the check in secret