While the frame rate just might be high enough for video if you just zoomed in on a smaller window on the desktop of your Mac or PC, there would be no sound. The VNC protocol has been around for ages, and does not support audio transmission.
There was a sale on Jaadu at one point where he dropped it to $4.99 from $24.99 for one day. Keep an eye out and he may do it again for some extra exposure.
All I can say is I paid full price and it was well worth it at that cost. I had bought the full version of Mocha VNC prior to that, and felt ripped off