It's possible, but you're most likely just seeing 2 or more authorizations. Please remember that every time you attempt to make an order, your card will be authorized for the total amount of the order. However, an authorization is not a charge! Any unnecessary authorizations will fall off your statement as soon as your bank verifies that we did not process the charge. It may take 3 - 5 business days for the authorizations to drop off. We know this whole thing can be super confusing so drop us an email, and we'll double check! Contact us with the dollar amount and your billing address details so that we can check to see if there are duplicate orders in your name.
However, if the additional billing amount reflects a value of 2 to 5 USD (depending on delivery address), this would be the payment for shipping which you had made on our thank you page. Not to worry, you may easily cross-check the values on the Order Confirmation email which would have been sent to you immediately after you had your order placed on our site (it's automated!).
If you can't find that email, do check your junk/promotional folder of your email dashboard. It's probably inside, else, you could send an email to our support team with regards to this issue and we will be sure to handle it.