I get lucky to get 1 or 2 ec a day. In one week i can get 13 event boxes hardly trying. That's 130 ec needed, and maybe 15 ec on a good week. I do not have the money to buy keys so i have piles of boxes I cannot open in my inventory. The game favors paying players heavily. Leaderboards are bought out, not earned. As a broke person it can be very disheartening to play this game. But what do I matter, they aren't getting money from me.