I love this synth. Big evolving ambient pads, arps, leads, it has it all. The going rate for it seems to be $4.99; if you can't find it for that, then just wait and watch for it to come up again at Pluginboutique. A real sleeper, I've had it for years and still find new inspiration when I open it up and browse through the presets.
Highly recommended for people like me who want huge electronica sounds but can't afford Serum or Omnisphere. Having said that, though, it's not just a broke musician's substitute for the more expensive ones, it has its own strengths and stands on its own as a professional instrument. Don't let the low price fool you.
The engine is a few years old, which is actually a benefit: it uses next to nothing as far as processing power so you can use it on any system you have, even that hand-me-down Dell laptop.
The one drawback it has, is as others have mentioned, the non-resizable GUI. It looks fine on my monitors, but I can see that if you had a 4K it would be pretty small. Whatever, there are so many good presets (and extra ones free for downloading) that you can get immersed in it without ever touching the controls.
Just get it. If you use it on one track it's paid for itself. For the price of one beer at your favorite watering hole, stay home for a night and work on music instead.