To help with future-proofing the Marketplace for future expansions, I have begun adding the amount of Ruby that is rewarded with Diamond purchases. This is currently not implemented, and is only there for when it is. The current exchange rates are 300 Diamonds per $1, and 100 Ruby per 300 Diamonds. I will only be adding Ruby to anything above 150 Diamonds (which is the majority of things). I will begin working on the bonus shop (will not be visible) sometime this month, and we hope to have it added after the backend changes coming with the new registration system and the new Diamond purchasing system, or sommetime soon afterwards.