Is DomiNations one of the most expensive computer games?

I´m not a big fan of computer games. Frankly I´m really bad at it, but recently I found an android based game that is more suited to my style of games. It´s called Dominations. It´s not a lightning action game but more an strategy game. The problem with it is that in order to advance to higher levels in the game you need to pay a lot of money. I think there´s no other game of this kind that requires you to pay those large sums of money. If you don´t pay, you can still progress your civilization but at a much slower pace.

You are supposed to collect gold, food, metals, etc from the work of your citizens and from you conquer battles, but there´s no way to convert those products in real life money, and I think that to be fair, it should be allowed to do it both ways. Maybe some smart game programmer will give us in the near future that possibility so we can earn coins ( steem dollars, digibytes, etc) if we are good enough playing the game, and also allow us to expend our coins in exchange for extra powers or resources inside the game. What do you think? Are there already games like that?

If you happen to be a fan of Dominations, please join my newly created Alliance: CorneadoresAL