When an order is attempted, a temporary authorization may be placed on your card. This occurs when our payment processor is testing to confirm that your credit/debit card account is active and has credit available to accommodate the order.
The temporary initial authorization and the capture of the total often show up as two separate line items on your bank/credit statement. The authorization can remain in the "pending" transactions for several days before disappearing depending on your bank/credit card company's policy. It is pending, because we haven't taken it, but it may still affect your available balance. This is why it can appear to already be a charge.
If you notice a second charge that is still pending after your order has been received, we assure you that it will disappear and stop affecting your balance.