For security, our online store does not keep your credit card information, so we can’t charge for additional items. In this case, we recommend that you place a separate order with only the additional items you want, then write in the checkout notes that you want to combine both orders. We will ship the 2 orders together and refund your credit card for the difference in shipping cost.
Reply to the order confirmation email indicating the switch you want to make. If the new item costs less than the original, we will refund the difference to your credit card.
Reply to the order confirmation email indicating the items that you want removed. We will recalculate the new cost of your order including the shipping cost and refund the difference to your credit card.