It's a great application. I'm using it over a year and it worths every penny.
User Interface and usability are as a great mac-product should be.
I got to mention that it is insanely easy to create a custom CSV export for my web-based movie database and much more.

Few days ago I got a message that I reached the maximum machines installed (I got 3 macs) and purchased a new license right away. After that I asked support details about licensing without complaining about buying a new license.
They got back to me with answers, expanding my old SN for more machines and refund my money back because as they said "there was no need for me to buy a new license".

Over all, I believe that DVDPedia gives a total mac-experience program.