Yea I was really close to buying that box set untill I ran across
www.futureblues.com and it said somewhere in there that the 3 disc set was a bootleg.
Does the anime you are buying have Enligh and Chinese subtitles? That is one good hint that they are bootlegged because they normally don't make Chinese and English subtitles in the same disc but the bootlegs are usually made in China so it has China subtitles.