Yea if u remember after boxes price update many players get more 400mils coins, like rising, fang etc.And i think its more 1000+ accounts. Maybe many of this guys left game before update so we dont see their.
really now? do tell me more... how 400m that transformed into let's say 40m get's you all that stuff... use math.
In first login u can exchange 1.500.000 on 1 premium box. Now use ur math and count how many boxes will come out of 400 mills.. Goodness..