The DVD release mentioned will probably only be sold in North America, so for those outside of the continent, you better hope that they release them in your country. Your best bet would be purchasing the DVDs online (if they ship worldwide).Then, another issue would be how to play the DVDs.
Check this out. If your country supports NTSC, you're in great shape. Otherwise, you'll either need a region-free DVD player or you'll have to try to get you PC's DVD player to play the DVDs.