the most expensive game I'v played, to get a good quad pack you must invest several hundred dollars, for 1 fused card. It's still kind of fun if you are F2P or spend a couple of dollars on some epics once in a while.
Suggestion: Different colors for every x 100. Last 3 digits red, next 3 digits blue, next 3 digits White, next 3 digits Green. That way we can identify easier how many millions, billions or trillions we have.