I've just finished watching this movie and I have to say that for something whose prime directive is to presumably sell MegaBloks dragons, it's pretty good.
The 3D animation isn't as good as can be done these days (think ReBoot in the early early days) but the voice talents are commendable and the story not bad at all.
We have a some villainous thugs, brave and handsome hero&heroine, a good plot twist and ...what is more... DRAGONS! Nothing with dragons in is totally gone for me....
It's a good DVD and the extras are reasonable (there is a game that can be played on your computer, the theatrical trailer, and a chance to get extra descriptions of main (and a few minor) characters while the film is in progress.
Overall, I'd give it two thumbs up...it's a good DVD worth buying.