You spend or not, as long you have a good team then prepare to lower your emo at next season.

Better team = hard life at next season, +4 / +5 level Cup and also play with 5*-6*-7* team at League, and if you follow your ego then you will spend more coz not all person can accept LOSE, they all want WIN, no matter what.
So, not game engine make you spend more, but your EGO

Win - lose - draw doesn't matter as long you can enjoy game.
Game was made for killing time and for fun, not mean to make you more stress, but if you stress because game this mean you take game too serious

CMIIW