I have a game called Fairway Solitaire and yesterday I made an in-app purchase (directly from my ipad 2) to unlock the rest of the game. The problem is that I still have a balance left from a $25 itunes card I redeemed awhile ago, but for some reason, the amount of my balance did not go down at all. I can only assume the charge was taken from my credit card instead of from my balance. Is this the way in app purchases normally work or should it have deducted the amount from my balance?