I have purchased only a handful of software applications which pay for themselves in a very short period of time, this is definitely one of them.
Documentation is not too clear and not quite extensive enough but make no mistake about the level and quality of service from the vendor. Support is both RAPID and EXCELLENT.
All in all, I'm haapy with the package and would recommend it to anyone who needs a plugin 'toolbox' to help them develop their Joomla site. It was a LOT more difficult without it! ;)