For your convenience, "Save credit card information for future use." option is available for registered accounts during the checkout process. This option allows you to complete the checkout without re-entering the card info again and again. 

    Security of your financial information is very important to us. We make sure your financial information is safe and secure. Technically, we do NOT actually save the card info on our website. Our system is only keeping unique secure token generated from successful checkout process as a reference to process the payment again in future. You can remove saved card info. 

Saved card(s) will be listed under My Account > Stored Payment Methods. Click on "Delete" to remove saved card(s) under your account.