Someone else also write about this
http://forum.topeleven.com/top-eleve...-boosters.html

I bought 50 boosters 3 days ago and only have 18 left

Why you did that ?
Mourinho saying that we use boosters to increase the morale of the players but doesn't saying that with full morale they 'll play better

As you 're new in the forum (welcome), I suggest to find and read some useful
(like this, http://forum.topeleven.com/top-eleve...op-eleven.html
if you want, ask there, I 'll answer).

Gonna save you from spending money in the future as this forum also helped me to that too.