The plugin is supported on SketchUp 2017, 2016, 2015, 2014, 2013, and SketchUp 8, on Windows and Mac.
For using this plugin, you can request a trial license. The trial license allows the user to use the plugin for 30 times (trial license automatically expires after one month)
The professional license of the plugin costs $79
The professional license allows the user to install the plugin on two machines.