The game was a $35 USD financial commitment. So everything above that is extra. It's possible an extra $5 USD was spent on membership, but that is not a necessary game fee. :) I hope this helps.
To be fair to the app, this is the best general payout I have seen for a $35 game. They auto-check the box to pay extra for 'membership.' You need to look for it on every screen as you sign up and pay, otherwise it's added by default...and they dont go out of their way to make it obvious. Most of the games, like this one are structured so only members receive certain benefits, likely weekly giveaways, but it's completely unnecessary. Bigger question is are the rewards that only members can reciece funded from the general winners pot, or strictly from member fees?