In the Settings > Payment Section of ezimerchant you can see the list of payment methods available to you. PayPal is automatically integrated, all you need a PayPal account.
Credit card processing is 'manual' (ie, you will need a POS terminal to charge the credit card details in the order) by default. Payment Gateway for automatic credit card processing can be setup, but an "online merchant facility" with the bank is required. $110 setup fee applies for the Payment Gateway service same credit card processing transaction fees apply.
The other available Payment Methods are all 'Offline' payment methods that require some sort of manual processing to complete.