In a word, very. We use Moneris, a trusted provider, to process your transaction and don’t store your credit card number in our system. If you look in your Internet address bar on the payment page, you can see a little padlock icon. This means that your data is being sent securely and can’t be intercepted.
Insider tip: look for that padlock any time you are sharing sensitive financial details online; if it isn't there, your data may not be secure.