How much are we actually paying to play? – Crosswords With Friends Review

I'm confused. Aren't we supposed to be paying ten coins per game? I've been charged twenty and I also believe thirty coins. Not fair. Also, I've been trying to invite friends through Facebook and it will not let me. Gives the option but when I hit it, nothing not. Maybe a good thing. I think when the coins are gone so am I.
Review by Stoucan on Crosswords With Friends.