ANSWER
As with the majority of online retailers, once your have entered your payment details your bank will place an authorisation against that full order amount in your account. This will show as a pending amount on your statement but will not actually be taken by us.
As soon as we cancel an order we automatically send information to your bank to ask them to release any outstanding authorisation. This process will take up to 5 days depending on your bank's procedures. For orders placed from overseas this may take longer. Please contact your bank for details.