[ringleader]

Originally Posted by Benjamin-P

Is there a way to test payment systems without having to test with real money? I'm losing out with all these transaction charges.

Yeah, there is (for paypal, at least).
Your board will NOT be able to accept payments while you are testing, though.

Get a login for testing purposes at http://developer.paypal.com
Create a business account (this is equivalent to the email address you normally use) and a personal account (like a customer would use).
Put the testing email address that paypal generates for your developer Business account into your payment api for paypal instead of your regular one.
Turn on IPN for your testing Business account.

Change every occurrence in includes/class_paypal.php of
www.paypal.com
to
www.sandbox.paypal.com

Now when you go to payments.php on your board it will use the testing business email from the api to connect to the sandbox.paypal.com testing server.
To pay for a payment use the login for the personal testing account that was generated for you on the paypal developers site.