On rare occasisions, some of our customers have some problems related to an AVS error for your credit card transaction. This is usually because the billing address provided does not match what is on file with the credit card company. If you correct your address to match, the transaction should go through. It may be advisable to contact your credit card company to ensure that the information in their systems is correct. Another option may be for you to select Google Checkout as their address validation system may not be as sensitive as what we use for direct transactions.