Amosnz: My work has a Corporate TeamViewer license for version 8, however now that version 9 is released they want us to pay for the upgrade.
At these prices it should be a lifetime license, so if you are thinking about buying TV bear this in mind.
Our organization will be buying Teamviewer 9 licenses with 10 seats in couple of months. While the initial cost of the corporate/enterprise license that comes with 3 seats is cheap, the additional seats are not. Saying that it's a one off cost and only need to pay 30% of the advertised price for version 10 or version 11 etc updates. Any version 9 updates are free of cost. Still better than the VNC solution we use now.