Spectating from the Sidelines
I'd like to touch up on this subject:
If this was to be implemented, the amount of credits you get for Varium would be MUCH lower. Since if you're getting 15,000 credits in the 10,000 Varium package, well, that's a little OP if you were spending 500 Varium on 20,000 Credits.
Now, my calculations can be off, but if we were to do this, you would pay about 500 Varium to get 750 Credits.
So theoretically speaking, a lot of # tweekings would need to be undergone before something like this could happen, and it would need to be tested and balanced.