Yes. Your payment card information (credit card or debit card) is encrypted and processed securely with our payment provider. You can see that it's a secure connection by looking at the URL address bar in your browser and seeing the HTTPS (meaning that it's a secure SSL connection) in the web address of our payment page.
We don't store your payment details on our servers. Payments are processed by our payment provider Stripe. All data is encrypted and hashed.