It was most likely a temporary payment pre-authorization and not a second charge. PayPal will temporarily pre-authorize the payment on your card. After you have finished entering your payment information in PayPal, you will be returned to alldayshirts.com to complete your order. Payment will be submitted only after you have completed your order here at alldayshirts.com. Starting the checkout process over again could result in an additional temporary payment pre-authorization on your card, but there will only be one payment that occurs after the "Complete Order" button is clicked and the order confirmation number is displayed.