Where can I find the Naoki Urasawa's Monster complete box set with English sub?

I have been looking everywhere for the original Naoki Urasawa's Monster complete box set that is English SUBBED only (I am not talking about the Viz release that is the Box Set 1 that has English dubbing). The one site I found that had the complete collection was a bootleg. Does anyone know where I can find the original Japanese release that is not a bootleg? Thank you so much for your help!