I wonder how well these are selling for them. On the one hand dbz was very popular in it's time, even outside of anime fans. On the other hand any taking an active interest in the releases would have struggled with manga's crappy "there are no plans to release the final Kai season at the moment." this led to many (including myself) to import.
I even bought a region free bluray player just to be rid of their habit of not finishing their damn releases & their insistence on reauthoring cceptable sources.