So I found an advertisement for this game while I was browsing PSO-World earlier and I downloaded it. Immediately I fell in love it was cute, simplistic and fun. After making my way to Haven and doing a few levels of the dungeon I started to notice that everything was costing Energy, literally everything. I used up what I had having a blast and being more than willing to subscribe to a game if I feel that I'll enjoy it I dropped the 9.95 for however many energy points that got me.
Now I've only used about 100 or so of the Energy that I bought but I can see that with the way I play games online when I'm not working the cost to keep playing will be outrageous. Obviously I'm not going to bring my girlfriend over and have to pay over 100USD a month for the two of us to play regularly.
I guess you can call it another rant about the energy system as I've read quite a few but the games got what I would enjoy and she would feel the same but the cost of playing heavily would easily be 5x as much a month as what I'm currently paying for my current MMO (DOFUS) Though I pay that in yearly subscription fees.
All in all this is a great game and has a lot of potential but I sadly don't see it going very far with the current micro-transaction system they have in the game. If I wanted to play a facebook game I'd install the farmville app.
You can transfer crowns into energy, energy into crowns. Mobs in dungeons drop crowns. That should alleviate your concerns.