Expensive (Feralfelidae)

This game overall is very fun and addictive. Ive been here since the first mino monsters and the second one still has some of the old mechanics but has improved wayyy better than the first one. But here are some rather big issues with the game:
1-gems are to expensive,I understand you need to make money somehow but 5$ for 50 gems is just too expensive and rage inducing. Maybe 50 for like .99¢ or something along those lines
2-berries, they take up to much storage and it takes a billion of them just to evolve one mino like honestly I have to level up the mino itself and get the right amount of berries? Thats just outrageous
3-all these special events are way to hard to defeat at my level..I only turned level 21 when I decided I would give it a go and got my tail handed to me. How am I supposed to defeat an event and get the mino chests if they are literally impossible to beat?
3-keys, what is the point of defeating an arena if I have to pay to open the chest I so rightfully earned? I think the key factor should be removed completely
Sorry I didnt mean for this to get this long but these problems are really irking me and prevents me from giving this game the 5 stars it would have.

Jorda3533 about Mino Monsters 2: Evolution, v4.0.105