The tool is a great time saver from having to write out so much code but it does nothing you can't do on your own. So if you know how to code then save your money.

The site advertises the cost is for the tool and the training videos you need. However the videos spend most of the time covering topics that are available in the Joomla Docs. The other time is spent explaining pretty obvious features of the extension.

In all honesty I feel the extension over complicates the process of making a Joomla template.

If you want to save time writing a few lines of code I recommend the extension. However I suggest you learn the inner workings of the Joomla system by reading the Joomla Docs and just do it yourself.