And I totally agree with richcb7. The push from a staging to a productive environment is the most basic and elementary part of the concept. Without it is just a cloning tool and the word “staging” is not applicable.
It is almost obvious to call it a trap, because the fact that this elementary function is behind the paywall is let’s say fogged. There are even links and pictures and buttons on the config page saying “Turorial: push changes to live website” and “Try out now”. That may not say but definitely suggest, that it is part of the free version.
And the trick is to let people use the plugin to work on their staging page, spending a lot of effort, and when they want to push it to live, they surprisingly face the decision: doing all the work once again, or pay around $100 (ONE HUNDRED for a single website) to get it moved.
I consider this as a dishonest and unfair business practice, I will not support it by paying any money and can only warn against using this plugin.