Samples of credit-card payment process.

[opencart9876]

Hi friends,

I may buy a module(?) of Credit-card-payment-system, which should be implemented inside OC - that is: when users pay, OC title and/or aligns are still as part of payment form.

Please tell me:

1. samples (links) of the software, so, I know its looking and features.
I hope it allows me to input fake credit-card info without causing any trouble, or I just have a look.

2. price of the software, do you charge for each money transaction or only once for the software?

Thanks.