I see a lot of people complaining because they have to pay 10$ to start playing the game and that makes no sense to me, if you really want to you can make your 10$ back in less than a month...
Just take a look at one of the rewards I got from a daily quest, If I sold everyone of this cards at the current maket price I would get:
0.49 + 0.14 + 0.12 + 0.09 + 0.04 + 0.08 = $ 0.96
In a single day, just by playing 15 minutes of Steem Monsters, which I love!
This wasn't even the best reward I got so far!
In one of my best rewards I received around $4 worth of cards.
The bottom line is, don't let the $10 initial investment demotivate you!