Guys, I'm a cheapskate. I don't pay for mobile games at all! If they have a few paid features, I just make it work without them. Sure, I get bitter, but I definitely won't give bucks away for a mobile game. Being a Nintendo fan is expensive, after all.
In-app purchases, particularly, really irk me for some reason, so I tend to flat out avoid games that rely heavily on them... Sometimes it gets way too in-the-nose.
This is why lately, I've stuck to mobile games only to relax; cute harmless games that prevent me from committing a crime at work, for example. Neko Atsume is the bomb.