Sorry but from what I gather this component doesn't seem to be optimal.
It says on the site that JoomlaPAL has issues with Joomla 1.0.5 and RC2. So what about new releases of Joomla - will JoomlaPAL work with them in conjunction with CB? Pretty vital, I think, at that price.
Having said that, I think a core plugin of some sorts would be really nice, allowing developers to work on payment solutions on their own.
Ford