Sryth Bonus Points was an early mechanic of donations. You received 400 SBP for each 10$ donated. You could then exchange them for AT, Experience and Gold.
The rates were:
- 25 SBP for each AT
- 8 XP for each SBP
- 16 gold for each SBP
At some time the GM realized most exchanges were for AT and changed it to the current system, skipping a step (you now receive the AT directly, and can exchange them for Exp and Gold if you want to).