BRCS:Chapter eight/Outside the lines/Non-Cerilian settings

The domain rules assume that regents carry the blood of the gods. If you wish to use these rules in a campaign world without scions, use twice the character's level as their "bloodline score" to determine maximum collection and regency reserve.

In a non-BIRTHRIGHT setting, you may select any coinage equivalent to a Gold Bar, as appropriate. The default value of 2,000gp in coinage should be acceptable for most campaigns. It should be noted, however, that a Gold Bar is not just a measure of monetary assets; it is a combination of many factors that is expressed in a term for use on domain-level spending/value. Typically a GB is a combination of coinage (sp, gp, etc.), valuable assets (gems, artwork, etc.), or owed services and goods (weapons, armor, food stuff, cloth, etc.). The assets represented by a GB may vary based on both culture and time; for example, in the winter months a collected GB probably represents worked goods, not foodstuffs (which might be represented at harvest-time). The Gold Bar is a game abstraction and can be anything the DM deems reasonable.
Does an Anuirean GB have the same value as an Rjurik one? For the purposes of abstraction, the question is not relevant. A GB collected and spent in Anuire has the same relative purchasing power as a GB collected and spent in Rjurik. Only when Gold Bars cross culture boundaries does the exact value of the GB becomes truly relevant. As BIRTHRIGHT is an action-oriented game setting (rather than a cultural simulation), it is recommended that the relative economic status of various cultures be disregarded. In effect, a Gold Bar has exactly the same purchasing power everywhere. DMs who wish to institute rules for inflation, devaluation of coinage, and other economic factors are encouraged to do so, but such detail is beyond the default scope of the setting.
It should also be noted that some BIRTHRIGHT domain purchases in gold bars do not always reconcile well with the gold piece value guidelines presented in the Dungeon Master's Guide or other official d20 source books. The gold bar values for castles, ships, military units, and other domain assets are based on the established (and well play-tested) domain-level values introduced in the original BIRTHRIGHT setting. Discrepancies could be explained by noting the prices in the official source books may include the value of the land on which the castle/keep is built, plus the cost of creating a significant agricultural area with which to support the castle's inhabitants; such factors are already accounted for in the domain-level rules and thus the perceived prices may differ. It should be taken as read that the price for some assets have a different value in the BIRTHRIGHT setting. Use the values for assets in other campaign settings with care; combining two possibly different scales of asset valuation is potentially unbalancing.