Once your cart ready, you will be redirected at the last step to Paypal, for a secure transaction. You don't necessarly need to own a PayPal account or to open one. You can choose to pay either by Visa (default option) or by Paypal (if you already have a account, or if you wish to open one!).
Once on the payment page, the only thing you have to do is to choose your card type, to fill out the requiered fields (card #, expiration date, etc...), and to click "continue" at the bottom for the next step; when the payment process is completed, you will received almost instantly a confirmation email, a bill, and a link to download the pdf; alternately, you can download your documents directly from your account.
Once payment is confirmed, your credit card details are not stored. You will need to fill them out again for each order.
For a maximum security, Talent-Aiguille uses Paypal, specialist of secured online payments. Your card details are encrypted from your computer to their authorization servers. Talent-Aiguille never knows your card details.