Board Thread:Questions and Answers/@comment-64.180.225.26-20130125045448

I've been playing the game for a couple weeks now and was wondering how the game charges (via credit card, or through Apple's account). I'm also curious to know if it's worth spending money to get those gems for the card packs. It's been tough playing with only Rare EXs but I also don't want to spend a ton of money. Thanks! 