I know that RLD it taking advantage of the clear case by printing double sided inserts that can be seen when the case is opened.
I don't know if you got copies or not. But the fact that you got clear cases is definitely not an indication that they are. DVD-R's are easy to identify by looking at the data side of the disc. Burned discs have a purple tint to them, instead of the silver or gold tint that regular DVD's have.

