Normal situation. According to the information of the steam platform, the verification fee of 1 USD needs to be deducted from the account, and the validity of the bound credit card will be verified by converting it into RMB 6 yuan and 1 USD, which will generally be returned to the bound card next month. So it is normal for steam to deduct money from the bound credit card. Steam platform is a game and software platform developed and designed by Bram Cohen, inventor of BitTorrent(BT download) hired by Valve Company.