Is it safe to use my credit card online?

Yes, it is extremely safe.

When transacting via our secure server, your credit card and personal details are encrypted using the latest industry standard SSL (Secure Socket Layer) 128 Bit encryption technology before being sent over the internet. Your credit card number is removed from our on-line server within one minute of it arriving and is stored on a separate secure server which is not accessible via the internet at all.

Even so , if you feel more comfortable giving your card details over the phone, you can nominate the Pay by Phone option in the checkout procedure.