How come the listings are also including Japanese laserdiscs and DVDs??
Bear with us on this explanation, as it seems more confusing than it really is. The listings are for English-language collections that are in the NTSC color system, which is the North American standard. Japan also uses the NTSC system, and since their laser releases feature both Japanese- and English-language tracks, it would not be impossible for an American collector to purchase and watch them.