I'm not sure I have this correct.
It sets up the same things as SoaS, that is, Apache, MySQL and OpenSim. Which are all free.
It updates OpenSim the same as Diva's Distro does. Which is free.
You cannot use your preferred (and free) viewer, you have to use the one that comes with it.
It loads an OAR for your land, which, from the example shown, are free.
It uses a GUI to interface with the console.
For $20 per year.