Good prices.
You have to wonder though, Presonus buys up a product developer and a few months later is having a fire sale (prices undercutting the distributors) on a download of their newly acquired products. In spite of protestations that development and support will continue, will there ever be a Notion5? Or do they just plan to cash out?
Given the competition, and the fact that these products are mature, reportedly relatively intuitive to use, and well reviewed, buying the current offering is sort of a no-brainer. If you want good looking output, and have the patience, you can get Lilypond. I wonder how the MusicXML export from Notion is. Better than Sonar no doubt.
By the way. I am assuming the download file (NotionBundledInstaller.exe) is just a stub, and that you will need to run it with an internet connection open to actually get the sample library. Can anyone confirm that?