well fist of all they take 10 gems to flip 2 times and I woudn't be surprised if the second worsed hero come up on that try, as the worsed hero already is in place on the first try lol.
This game is disingned to make money quick and thats ofcourse the right of the owner but for me its over already, the money isn't coming from my wallet no more, atleast they could intent to give you some value back but it seems they don't care about that so I am leaving the game already looking for another