The super box sets that you see on e-bay are dirty cheep maybe about $10 or $20 more then the japanese ones. They are not burned copies there usely made in china or singapore mostly singapore. they have both audio on it cause they get the rights to it cheep, and it does not cost them as much because they don't have import taxes , like or minium wages like we do thus the cost is less , but also they us a higher end type of DVD i think it called DVD 9 , it stores up to 8 or 9 gigs on it that why you may find a whole series on 3 dvds with the just like the japanese DVD's well the catch is with DVD with dual audio your only Doble digtal 2.1 witch is only set for a 3 speaker system , when on the Japanese and American Relases you get 5.1 or higher makeing for a much high sound quality, and 5.1 can handel i think 3-6 speaker surround sound.

I have a few of these off of that i got from e-bay and compines in singapore and they are good DVD's but if you compare them to the other American and Japanese DVD sound you can see it big time, so you get what you pay for. I also noticed on some of the japnese DVD's have a lil bit less of a Video quality then the american and so do the dual audio DVD sometimes subtiles will be cut off do to TV types. I hope this info Help. Sorry for Grammer and spelling. Any qustions just ask.
Cecil