are almost perfect. I've etr'd twice now w/in the month, first from the free one, second from my collecting them from lvl 20-28. It worked out to be just enough.
So please keep the CoV rewards doubled.
That effectively makes the cost of hearts, in the month of Dec., 2100. If you aren't going to keep the CoV rewards doubled, please consider changing the cost of the ETR hearts. 4200 is clearly too high - if you feel 2100 is too low, perhaps think about 2500. That would be just about right if you want people to stay at cap for a bit of time. You are welcome to raise it to 3000 when you raise the level cap to 30, if you feel you need to.
Thank you for December,