You can still use the Paypal checkout option to enter in any debit/credit card you wish without needing an actual Paypal account. To do so…
1. Click the Checkout with Paypal option
2. Instead of logging in, there is a link below that will say ‘Pay with Debit or Credit Card’ click that

3. Enter an email (this will be for your emailed receipt)
4. Enter your card information
5. Finish the checkout process