two things: cards values should depreciate not stay the same six months after their release, and you shouldn't be able to shuffle and get the exact same card(s) back.
you should only be able to get in the top 50 in the arena once a month, or once every time the reward changes, to allow others to get a chance to get there with a little less competition.
what the crap happened to the deck i was using? i can't find my old cards, i just started tropica city. if i have to play through the chapter to get them back i may just quit.
I think it's wrong to require in game money to fight at the arena, and then reward those who fight the most, either the cost should go away, or the prize should be given to a lot more.
We are currently investigating the issue. Sorry for the inconvenience.