We can however chose to create our own bank and currency or using it from another nation (like Shireroth).
If we chose the Batavian bank: no problem. If we chose the Shirithian (or creating our own) bank, then we need tu use a formula:
1 unit = number of active people, over a period of two months x average number of posted posts in official meetings over a period of two months x 0,001.