Incidentally, the thing they hide (and have been hiding further since version 8.0 came out) is the free version for home use.
It's
http://free.grisoft.com if you want it. Make sure you click on the "free" version all through until it downloads for you (avoiding the marketing department's idea of getting you to pay for it).
Updates are free as well, but in 12 months time it'll prompt you to buy an update. This is another of their marketing dept's ideas to get you to spend money....just download a new copy from the above link again