Actually, I remember looking it up and Australia and NZ have a box set of Johto Journeys and Johto League champions. So you could get that, but you'd also need a multi-region dvd player if you're in the states.
I am the current leader of Save Our Voice Actors, a Pokemon fan group supporting the voice actors in the anime dubbed by 4Kids (seasons 1-8). Our goal is to provide The Pokemon Company international with encouraging feedback in support of returning the main cast members. If you're interested, please visit us at facebook.com/saveourvoiceactors