Don't worry, you haven't been charged. When you first set up a FunPass subscription or add a new credit card to your account, we run an authorization on the card to make sure it's valid. Some banks then set aside the $1.00 (USD) as a pre-authorized hold.
Pre-authorizing credit cards is a security measure that we use to protect our players and GameHouse from fraudulent acts against our ordering system. The $1.00 (USD) authorization hold will be released back to your card between 2 and 7 business days.